APA (7th ed.) Citation

Pringle, L. P. (1971). One earth, many people: The challenge of human population growth. Macmillan.

Chicago Style (17th ed.) Citation

Pringle, Laurence P. One Earth, Many People: The Challenge of Human Population Growth. New York: Macmillan, 1971.

MLA (9th ed.) Citation

Pringle, Laurence P. One Earth, Many People: The Challenge of Human Population Growth. Macmillan, 1971.