Ebooks have some of the same elements of print books, but differ in a few ways. The general format for ebooks is:
Author, A.A. (Year). Title of book with only first letter capitalized [E-reader version, if applicable]. Retrieved from http://xxxxx or https://doi.org/10.xxxx
Important Notes:
Some e-books will provide you with a doi for the book. If that is the case, you should cite the e-book similar to how you would any other book, except include the digital edition publish after the title in [brackets] and then include the doi at the end.
Format:
Author, A. A. (Year). The title of the book: Subtitle, if necessary [Digital Edition]. DOI
Some books, particularly older ones or some electronic only books, will not provide a doi. If no doi is provided with the e-book, instead include homepage of the URL of the book publisher or the online library from which you retrieved the book.
Format:
Author, A. A. (Year). Title of book: Subtitle, if necessary [Digital Edition]. URL
Citing a chapter in an edited ebook combines the citations for chapter citation and ebook citation. Once again, the publisher information is switched out for the online source and e-reader information, if applicable, should be added.
Format:
Chapter-Author, A. A. (Year). Title of the essay or chapter, but do not italicize. In Book-Author/Editor, B. B. (Ed.), The title of the book, and this is italicized [Digital Edition] (pp. xx-xx). DOI or URL