Cita APA

Simpson, G. G., Beck, W. S., Humphrey, D., & Van Dyke, H. (1986). Life: An introduction to biology (2a. ed.). New York: Harcowt, Brace & World.

Citación estilo Chicago

Simpson, George Gaylord, William S. Beck, Donald Humphrey, y Henry Van Dyke. Life: An Introduction to Biology. 2a. ed. New York: Harcowt, Brace & World, 1986.

Cita MLA

Simpson, George Gaylord, William S. Beck, Donald Humphrey, y Henry Van Dyke. Life: An Introduction to Biology. 2a. ed. New York: Harcowt, Brace & World, 1986.