If there is an editor instead of an author, you would simply insert the editor's name in the place where the author's name is now, followed by (Ed.). The rest of the format would remain the same.
General Format
Author Surname, Initial(s). (Year). Book title: Subtitle [Version]. doi:xx.xxxxxxxxx
OR
Author Surname, Initial(s). (Year). Book title: Subtitle Retrieved from URL of the home page of the e-book provider.
Examples
Ochs, S. (2004). A history of nerve functions: From animal spirits to molecular mechanisms [Adobe ebook version].
doi:10.2277/052124742X
Ochs, S. (2004). A history of nerve functions: From animal spirits to molecular mechanisms [ebrary Reader version].
Retrieved from http://www.ebrary.com/corp
General Format
In-text citation, paraphrase: (Author's surname [of chapter or article], year)
In-text citation, quotation: (Author's surname [of chapter or article], year, page number)
Reference list citation:
Author's surname [of chapter or article], Initial(s). (Year). Article or chapter title. In Editor Initial(s). Surname (Ed.), Book title: Subtitle
[E reader version, if applicable] (pp. page range of article or chapter). Retrieved from http://xxxxxx OR doi:xxxxxx
Examples
In-text citation, paraphrase: (McLaughlin, 2014)
In-text citation, quotation: (McLaughlin, 2014, p. 91)
Reference list citation:
McLaughlin, K. A. (2014). Developmental epidemiology. In M. Lewis & K. D. Rudolph (Eds.), Handbook of developmental
psychopathology (pp. 87-107). Retrieved from http://0-ebooks.ohiolink.edu.olinkserver.franklin.edu/ebc-home/