Cita APA (7th ed.)

Tortora, G. J., & Becker, J. F. (1972). Life science. Macmillan.

Cita Chicago (17th ed.)

Tortora, Gerard J., i Joseph F. Becker. Life Science. New York: Macmillan, 1972.

Cita MLA (9th ed.)

Tortora, Gerard J., i Joseph F. Becker. Life Science. Macmillan, 1972.