Cita APA (7a ed.)

Winfield, J. B. (1999). Pain in fibromyalgia. [s.n.].

Cita Chicago Style (17a ed.)

Winfield, John B. Pain in Fibromyalgia. [S.l.]: [s.n.], 1999.

Cita MLA (9a ed.)

Winfield, John B. Pain in Fibromyalgia. [s.n.], 1999.