Cita APA (7a ed.)

Stokes, B., & Helewa, A. (2007). Arthritis: How to stay active and relieve your pain. Bull Pub. Co..

Cita Chicago Style (17a ed.)

Stokes, Barbara, y Antoine Helewa. Arthritis: How to Stay Active and Relieve Your Pain. Boulder, Colo.: Bull Pub. Co., 2007.

Cita MLA (8a ed.)

Stokes, Barbara, y Antoine Helewa. Arthritis: How to Stay Active and Relieve Your Pain. Bull Pub. Co., 2007.