Cita APA (7a ed.)

Lewis, G., & Wessely, S. (1992). The epidemiology of fatigue: More questions tahn answers. [s.n.].

Cita Chicago Style (17a ed.)

Lewis, G., y Simon Wessely. The Epidemiology of Fatigue: More Questions Tahn Answers. [S.l.]: [s.n.], 1992.

Cita MLA (9a ed.)

Lewis, G., y Simon Wessely. The Epidemiology of Fatigue: More Questions Tahn Answers. [s.n.], 1992.