Cita APA (7a ed.)

Houvenagel, E. (1999). Mechanisms of pain in fibromyalgia. [s.n.].

Cita Chicago Style (17a ed.)

Houvenagel, Eric. Mechanisms of Pain in Fibromyalgia. [S.l.]: [s.n.], 1999.

Cita MLA (9a ed.)

Houvenagel, Eric. Mechanisms of Pain in Fibromyalgia. [s.n.], 1999.