APA (7th ed.) Citation

Thompson, W. S. (1948). Plenty of people: The world's population pressures, problems and policies and how they concern us. Ronald Press.

Chicago Style (17th ed.) Citation

Thompson, Warren Simpson. Plenty of People: The World's Population Pressures, Problems and Policies and How They Concern Us. New York: Ronald Press, 1948.

MLA (9th ed.) Citation

Thompson, Warren Simpson. Plenty of People: The World's Population Pressures, Problems and Policies and How They Concern Us. Ronald Press, 1948.