Whitten, D. G. A., & Brooks, J. R. V. (1988). The Penguin dictionary of geology (Repr.). Penguin Books.
Chicago Style (17th ed.) CitationWhitten, D. G. A.., and J. R. V. Brooks. The Penguin Dictionary of Geology. Repr. Harmondsworth: Penguin Books, 1988.
MLA (9th ed.) CitationWhitten, D. G. A.., and J. R. V. Brooks. The Penguin Dictionary of Geology. Repr. Penguin Books, 1988.
Warning: These citations may not always be 100% accurate.