Cita APA (7a ed.)

Wessely, S. (1998). The epidemiology of chronic fatigue syndrome. [s.n.].

Cita Chicago Style (17a ed.)

Wessely, Simon. The Epidemiology of Chronic Fatigue Syndrome. [S.l.]: [s.n.], 1998.

Cita MLA (9a ed.)

Wessely, Simon. The Epidemiology of Chronic Fatigue Syndrome. [s.n.], 1998.