APA (7th ed.) Citation

Boyle, W. (2019). A friend is a gift you give yourself: A novel (First Pegasus Books hardcover edition.). Pegasus Crime.

Chicago Style (17th ed.) Citation

Boyle, William. A Friend Is a Gift You Give Yourself: A Novel. First Pegasus Books hardcover edition. New York: Pegasus Crime, 2019.

MLA (8th ed.) Citation

Boyle, William. A Friend Is a Gift You Give Yourself: A Novel. First Pegasus Books hardcover edition. Pegasus Crime, 2019.

Warning: These citations may not always be 100% accurate.