APA

Whitten D. G. A., Brooks J. R. V., . (1986). A dictionary of geology. : Penguin Books.

Chicago

Whitten D G A, Brooks J R V, . 1986. A dictionary of geology. : Penguin Books.

Harvard

Whitten D. G. A., Brooks J. R. V., . (1986). A dictionary of geology. : Penguin Books.

MLA

Whitten D G A, Brooks J R V, . A dictionary of geology. : Penguin Books. 1986.