Cita APA

Fernsides, W. G., & Bulman, O. M. B. (1953). Geology in the service of man. Middlesex: Penguin.

Citación estilo Chicago

Fernsides, W. G., y O. M. B. Bulman. Geology in the Service of Man. Middlesex: Penguin, 1953.

Cita MLA

Fernsides, W. G., y O. M. B. Bulman. Geology in the Service of Man. Middlesex: Penguin, 1953.