APA Formatting Guidelines

Introduction to APA Style

The American Psychological Association (APA) citation style is widely used in academic writing, particularly in the social sciences, education, and psychology. APA style provides a standardized format for presenting research, citing sources, and structuring academic papers. This guide covers the essential elements of APA formatting to help you create properly formatted academic documents.

APA style encompasses guidelines for manuscript structure, writing mechanics, citations, and references. First published in 1929, the APA style has evolved through seven editions to address changes in scholarly publishing and technological advancements. The seventh edition, released in 2019, includes significant updates to citation rules and formatting guidelines.

Using APA style demonstrates academic integrity by properly crediting sources and allowing readers to locate original materials. It also ensures consistency across papers and makes research more accessible to other scholars.

General Formatting Requirements

APA papers must follow specific formatting standards to ensure clarity and consistency:

• Page size: Standard 8.5" 11" paper
• Margins: 1 inch on all sides
• Font: A readable font such as 12-point Times New Roman, 11-point Arial, or 11-point Georgia
• Line spacing: Double-spacing throughout the document, including the title page, abstract, references, and block quotations
• Paragraphs: Indent the first line of each paragraph 0.5 inches (one tab space)
• Page numbers: Placed in the top right corner of every page, including the title page
• Alignment: Left-aligned with a ragged right edge (not justified)

Title Page

The title page is the first page of your APA paper and should contain:

• Paper title: Centered, bold, using title case (capitalizing major words), typically no more than 12 words
• Author name(s): Centered, formatted as first name, middle initial(s), and last name
• Institutional affiliation: Centered below the author names
• Course information: For student papers, include course number and name, instructor name, and due date
• Page number: In the top right corner (page 1)

For professional papers, include a running head on the title page only, aligned left and containing an abbreviated version of your title (maximum 50 characters) in uppercase letters. Student papers typically do not need a running head unless required by the instructor.

Paper Structure

A typical APA paper consists of four main sections:

1. Title Page: Identifies the paper, author, and institution
2. Abstract: A brief (150-250 words) summary of your paper (for professional papers and as required by instructors)
3. Main Body: Contains your actual content, typically including an introduction, method, results, and discussion sections for research papers
4. References: Lists all sources cited in your paper

Student papers may also include tables and figures within the body or placed after the reference section. Professional papers typically place figures and tables after the reference section, each on its own page.

Research papers typically follow a standard structure:

• Introduction: Presents the research problem and provides context
• Method: Describes how the research was conducted
• Results: Reports what the research found
• Discussion: Interprets the results and their implications

Headings

APA style uses a hierarchical heading system with five levels to organize content:

Most student papers require only Levels 1 and 2. Use additional levels only when necessary to organize complex information. When using multiple heading levels, apply them consistently throughout the document.

In-Text Citations

In-text citations credit sources within your text and allow readers to locate the corresponding entries in your reference list. APA uses author-date citation format.

Basic Formats

Direct Quotations

When quoting directly from a source, include the author, year, and page number:

For quotations longer than 40 words, use block quote format:

• Indent the entire quote 0.5 inches from the left margin
• Double-space the quoted text
• Do not use quotation marks
• Include the citation after the final punctuation mark

Reference List

The reference list appears at the end of your paper and provides complete bibliographic information for every source cited in your text.

General Formatting Rules

• Begin on a new page with the title "References" centered and bold
• List entries alphabetically by the first author's surname
• Use a hanging indent (first line flush left, subsequent lines indented 0.5 inches)
• Double-space all entries
• Include the DOI (Digital Object Identifier) for electronic journal articles and books when available

Common Reference Formats

Formatting References

• Capitalize only the first word of article titles and subtitles, proper nouns, and the first word after a colon or em dash
• Italicize the names of journals, books, and reports
• Give journal names in title case and italicize them
• Include volume numbers (italicized) for journal articles
• Include issue numbers (in parentheses, not italicized) only when each issue begins on page 1
• Add "doi:" before DOI numbers for both new and cross-registered DOIs

Common Mistakes to Avoid

When working with APA style, be mindful of these frequent errors:

• Inconsistent capitalization: Not properly capitalizing titles of references or section headings
• Missing citation information: Forgetting to include page numbers with direct quotations or incomplete author information
• Incorrect spacing: Using single spacing instead of double spacing throughout the document
• Improper heading hierarchy: Using heading levels inconsistently throughout the paper
• Missing references: Citing sources in text but failing to include them in the reference list
• Incorrect DOIs: Including incomplete, incorrect, or improperly formatted DOI numbers
• Misplaced punctuation: Placing periods and commas incorrectly in relation to quotation marks and citations
• Inconsistent author names: Not using the same author name format throughout the document
• Improper italicization: Failing to italicize journal and book titles or italicizing article titles
• Missing hanging indent: Using regular paragraph indentation instead of hanging indents in the reference list