Cita APA (7th ed.)
Whitten, D., & Brooks, J. (1972). A dictionary of geology. Penguin.
Cita Chicago (17th ed.)
Whitten, D.G.A, i J.R.V Brooks. A Dictionary of Geology. New York: Penguin, 1972.
Cita MLA (9th ed.)
Whitten, D.G.A, i J.R.V Brooks. A Dictionary of Geology. Penguin, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.