Gaya APA

Thompson, W, S. (1984). Plenty of people: the world's population pressures, problems, and policies, and how they concern us (Rev. Ed.). New York: The Ronald Press Company.

Gaya MLA

Thompson, Warren, S.. "Plenty of people: the world's population pressures, problems, and policies, and how they concern us". Rev. Ed. New York: The Ronald Press Company, 1984. Text.