APA (7th ed.) Citation

Westbrook, R. (2002). Insomnia. An Onyx Book.

Chicago Style (17th ed.) Citation

Westbrook, Robert. Insomnia. New York: An Onyx Book, 2002.

MLA (8th ed.) Citation

Westbrook, Robert. Insomnia. An Onyx Book, 2002.

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