Cita APA (7a ed.)

Hotopf, M., & Wessely, S. (1999). Chronic fatigue syndrome: Mapping the interior. [s.n.].

Cita Chicago Style (17a ed.)

Hotopf, Matthew, y Simon Wessely. Chronic Fatigue Syndrome: Mapping the Interior. [S.l.]: [s.n.], 1999.

Cita MLA (9a ed.)

Hotopf, Matthew, y Simon Wessely. Chronic Fatigue Syndrome: Mapping the Interior. [s.n.], 1999.