My book has a subtitle. Do I include that in my references?
Yes, you should include the title, a colon, and the subtitle. However, you should only capitalize the first word of the title and the subtitle on your references page, not every word as you would in the body of your paper.
Here is an example from the APA Help guide:
Books: One author
Waller, B. N. (2011). Consider ethics: Theory, readings, and contemporary issues (3rd ed.). Upper Saddle River, NJ: Prentice Hall.
Thank you for using ASK US. Please contact us again if you have more questions.