APA (7th ed.) Citation

Caldwell, L. K. (1970). Environment: A challenge for modern society (1. ed.). Natural History Press.

Chicago Style (17th ed.) Citation

Caldwell, Lynton K. Environment: A Challenge for Modern Society. 1. ed. Garden City, NY: Natural History Press, 1970.

MLA (9th ed.) Citation

Caldwell, Lynton K. Environment: A Challenge for Modern Society. 1. ed. Natural History Press, 1970.