Cita APA (7a ed.)

Whitten, D. G. A., & Brooks, J. R. V. (1972). The Penguin dictionary of geology. Penguin Books.

Cita Chicago Style (17a ed.)

Whitten, D. G. A., y J. R. V. Brooks. The Penguin Dictionary of Geology. London: Penguin Books, 1972.

Cita MLA (9a ed.)

Whitten, D. G. A., y J. R. V. Brooks. The Penguin Dictionary of Geology. Penguin Books, 1972.