APA (7th ed.) Citation

McGowan, D. J. (1992). Learning about environment. Encyclopedia Britannica Educational Corporation.

Chicago Style (17th ed.) Citation

McGowan, David J. Learning About Environment. Chicago, Ill: Encyclopedia Britannica Educational Corporation, 1992.

MLA (9th ed.) Citation

McGowan, David J. Learning About Environment. Encyclopedia Britannica Educational Corporation, 1992.