APA (7th ed.) Citation

Gatchel, R. J. (2004). Clinical essentials of pain management. American Psychological Association.

Chicago Style (17th ed.) Citation

Gatchel, Robert J. Clinical Essentials of Pain Management. Washington, DC: American Psychological Association, 2004.

MLA (9th ed.) Citation

Gatchel, Robert J. Clinical Essentials of Pain Management. American Psychological Association, 2004.