Cita APA (7th ed.)

MARCUS, D. A., & COPE, D. K. (2009). Chronic Pain. Clinical Publishing.

Cita Chicago (17th ed.)

MARCUS, Dawn A., i Doris K. COPE. Chronic Pain. Clinical Publishing, 2009.

Cita MLA (9th ed.)

MARCUS, Dawn A., i Doris K. COPE. Chronic Pain. Clinical Publishing, 2009.