One Author:
Author, A. A. (Year). *Title of work*. Publisher.
Example:
Smith, J. (2023). *The history of coffee*. Penguin Books.
Two Authors:
Author, A. A., & Author, B. B. (Year). *Title of work*. Publisher.
Example:
Jones, M., & Brown, S. (2022). *Cognitive psychology*. Wiley.
Three or More Authors:
Author, A. A., Author, B. B., & Author, C. C. (Year). *Title of work*. Publisher. (List all authors up to 20; after 20, list the first 19 and then add “et al.”).
Example:
Garcia, R., Rodriguez, L., Martinez, A., & Davis, J. (2021). *Understanding social dynamics*. Oxford University Press.
Note: Italics are used for the title of the book. The publisher is usually sufficient; you don't need to include city or state unless it's essential to distinguish between publishers with the same name. For online books, you might need to add a DOI or URL. Always check the latest APA guidelines for the most up-to-date formatting.