Cita APA (7a ed.)

Richards, S., & Cleare, A. (2000). Treating fibromyalgia. [s.n.].

Cita Chicago Style (17a ed.)

Richards, S., y A. Cleare. Treating Fibromyalgia. [S.l.]: [s.n.], 2000.

Cita MLA (9a ed.)

Richards, S., y A. Cleare. Treating Fibromyalgia. [s.n.], 2000.