APA Citation You are viewing the free, open access version of The Nature of Writing. For all premium membership features (including quizzes, additional lessons, course progress tracking, and more), please register or log in. Introduction Intro to APA Citation In-Text Citation Basic RulesAdditional Rules The Reference List Formatting the Reference ListHanging Indentation The Parts of an Entry IntroductionAuthors and EditorsPublication DateTitlesPublication InformationDigital Object Identifiers Types of Sources PeriodicalsBooksMeetings and PresentationsThesesReviewsData Sets and SoftwareAudio Visual SourcesSocial Media and Websites