APA (7th ed.) Citation

(1997). Understanding sleep: The evaluation and treatment of sleep disorders (1. ed.). American Psychological Assoc.

Chicago Style (17th ed.) Citation

Understanding Sleep: The Evaluation and Treatment of Sleep Disorders. 1. ed. Washington, DC: American Psychological Assoc, 1997.

MLA (9th ed.) Citation

Understanding Sleep: The Evaluation and Treatment of Sleep Disorders. 1. ed. American Psychological Assoc, 1997.

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