APA (7th ed.) Citation

Gray, P. (1968). The dictionary of the biological sciences (2nd repr.). Reinhold Book Corporation.

Chicago Style (17th ed.) Citation

Gray, Peter. The Dictionary of the Biological Sciences. 2nd repr. New York ; Amsterdam ; London: Reinhold Book Corporation, 1968.

MLA (9th ed.) Citation

Gray, Peter. The Dictionary of the Biological Sciences. 2nd repr. Reinhold Book Corporation, 1968.