APA (7th ed.) Citation

Nelson, R. D. (2008). The Penguin dictionary of mathematics (Fourth edition.). Penguin Books.

Chicago Style (17th ed.) Citation

Nelson, R. D. The Penguin Dictionary of Mathematics. Fourth edition. London, England: Penguin Books, 2008.

MLA (9th ed.) Citation

Nelson, R. D. The Penguin Dictionary of Mathematics. Fourth edition. Penguin Books, 2008.