Cita APA (7th ed.)

Brubaker, S. (1972). To live on earth: Man and his environment in perspective. New American Library.

Cita Chicago (17th ed.)

Brubaker, Sterling. To Live on Earth: Man and His Environment in Perspective. New York: New American Library, 1972.

Cita MLA (9th ed.)

Brubaker, Sterling. To Live on Earth: Man and His Environment in Perspective. New American Library, 1972.