Chicago vs APA: When to Use Which

Chicago and APA are two major formatting styles that serve different academic communities. While both are rigorous, they have fundamentally different approaches to citation and formatting. ## The Fundamental Difference APA was designed for the social sciences, where publication recency matters most — hence the emphasis on date in citations. Chicago was designed for publishing and history, where the ability to provide substantive commentary in footnotes is valued. ## Citation Format Comparison ### APA Author-Date APA uses parenthetical author-date citations within the text: the author's last name and publication year appear in parentheses. This prioritizes the recency of research. ### Chicago Notes-Bibliography Chicago uses numbered footnotes or endnotes, allowing authors to include explanatory notes alongside citation information. This is ideal for historical and humanities writing where context matters. ### Chicago Author-Date Chicago also offers an author-date system similar to APA but with different formatting rules. ## Key Formatting Differences - **Abstract:** APA requires one; Chicago doesn't - **Title Page:** Different formatting rules - **Headers:** Different running head requirements - **References:** Different citation element ordering - **Note Formatting:** Only Chicago uses footnotes ## Formatly's Cross-Style Capability Formatly uniquely supports both styles and can convert documents from one to the other. This is invaluable for researchers who need to reformat the same paper for different publishers or courses.