Below is the format or structure for a book reference in the APA style.
There are examples opposite of book references from one author to more than six authors.
Author’s last name, Author’s first initial. Author’s middle initial. (Year, of Publication) Title of work. Publisher City; State : Publisher
Jacoby, W. G. (1994). Public attitudes toward government spending. American Journal of Political Science, 38(2), 336-361. https://doi.org/10.2307/2111407
Single Author Works
Harris, I. A. (2016). Surgery, the ultimate placebo: a surgeon cuts through the evidence. Sydney: New South Wales
Multiple Author Works
Harris, J. L., Roussel, L., Dearman, C.., & Thomas, P. L. (Eds.). (2015). Project Planning & Management: A Guide for Nurses and Interprofessional Teams. (3rd edition) Burlington, MA. Jones & Bartlett Learning.
If the work is published by an editor instead of authors, please use the term (Editor) of (Eds) in parentheses
More than 6 authors
Organisation as Author
American Psychiatric Association & American Psychiatric Association. DSM-5 Task Force & American Psychiatric Association (2013). Diagnostic and statistical manual of mental disorders : DSM-5 (Fifth edition). American Psychiatric Association, Arlington, VA
The structure of a book is consistent, see APA Format Style for a book , for an eBook add the DOI or URL after the publisher information.
Clark, M. & Phelan, J. (2020). Debating rhetorical narratology: On the synthetic, mimetic, and thematic aspects of narrative. The Ohio University Press. https://doi.org/10.26818/9780814214282