Parenthetical documentation or in-text citations tells the reader where you got any and all information that did not come from inside your own head. If using our APA Citation Machine, our citation generator will add the correct format for you automatically. Titles. When writing out titles for books, articles, chapters, or other non-periodical sources, only capitalize the first word of the title and the first word of the subtitle. APA (American Psychological Association) is the most commonly used to cite sources for health sciences and social sciences fields. This guide, revised according to the 5th edition of the APA manual, offers examples for in-text citations, endnotes/footnotes, and your reference list or bibliography page. Use the following template to cite a podcast using the APA citation style. For help with other source types, like books, PDFs, or websites, check out our other guides.To have your reference list or bibliography automatically made for you, try our free citation generator. Key: For step-by-step instructions for citing books, journals, how to cite a website in APA format, information on an APA format bibliography, and more, refer to APA book citation, APA citation website, and the other guides on EasyBib.com. Or, you can use our automatic generator. Why we include parenthetical / in-text citations. Researchers include brief in-text citations, both of which are called narrative and APA style parenthetical citations, in their writing to acknowledge references to other people’s work. Rule: If there is more than one reference by an author in the same year, suffixes (a, b, c, etc.) are added to the year. Allocation of the suffixes is determined by the order of the references in the reference list, not by the order in which they are cited.