Cita APA (7a ed.)

Balen, F. v. (1996). Fibromyalgia and other unexplained clinical conditions. [s.n.].

Cita Chicago Style (17a ed.)

Balen, Frank van. Fibromyalgia and Other Unexplained Clinical Conditions. [S.l.]: [s.n.], 1996.

Cita MLA (9a ed.)

Balen, Frank van. Fibromyalgia and Other Unexplained Clinical Conditions. [s.n.], 1996.