APA (7th ed.) Citation

Sharp, D. W. A. (1990). The Penguin dictionary of chemistry (2nd ed.). Penguin Books.

Chicago Style (17th ed.) Citation

Sharp, D. W. A. The Penguin Dictionary of Chemistry. 2nd ed. London: Penguin Books, 1990.

MLA (9th ed.) Citation

Sharp, D. W. A. The Penguin Dictionary of Chemistry. 2nd ed. Penguin Books, 1990.

Warning: These citations may not always be 100% accurate.