APA (7th ed.) Citation

Opie, J. (1971). Americans and environment: The controversy over ecology. D. C. Heath.

Chicago Style (17th ed.) Citation

Opie, John. Americans and Environment: The Controversy over Ecology. Lexington, Mass: D. C. Heath, 1971.

MLA (9th ed.) Citation

Opie, John. Americans and Environment: The Controversy over Ecology. D. C. Heath, 1971.