Cita APA

Postlethwait, J. H., & Hopson, J. L. (1989). The nature of life. New York: Random House.

Citación estilo Chicago

Postlethwait, John H., y Janet L. Hopson. The Nature of Life. New York: Random House, 1989.

Cita MLA

Postlethwait, John H., y Janet L. Hopson. The Nature of Life. New York: Random House, 1989.