Format: 

Author, A. A. (Year). Title of work. http://dx.doi.org/xxxxx or Retrieved from URL

Author, A. A. (Year). Title of work [E-Reader version]. http://dx.doi.org/xxxxx or Retrieved from URL

Author, A. A. (Year). Title of work. Location: Publisher.

Examples: 

Mayle, P. (2004). A good year. New York, NY: Alfred A. Knopf.

In-text: (Mayle, 2004, p. 24)

Beagan, B. L., Chapman, G. E., Johnston, J., McPhail, D., Power, E. M., & Vallianatos, H. (2015). Acquired tastes: Why families eat the way they do. Retrieved from http://www.ebrary.com

In-text: First mention: (Beagan, Chapman, Johnston, McPhail, Power, & Vallianatos, 2015, p. 15);
Subsequent mentions: (Beagan et al., 2015, p. 15)

Notes: 

For an edited work without a listed author, begin your entry with the editor's name followed by (Ed.) (e.g. Smith, J. (Ed.)). If you accessed the book on an e-reader, include the type of e-book version you viewed (e.g. Kindle Fire version) in place of the publisher's information. Include a doi or the URL for the website where you downloaded the e-book as the "Retrieved from" URL (e.g. http://www.amazon.com).

Source:
APA - 7.02, no. 18-20
APA (ER) - no. 14-16