MLA

Perry, Stewart E, and John P Spiegel. The Human Nature of Science : Researchers At Work In Psychiatry. New York: Free Press, 1966.

APA

Perry, S. E, & Spiegel, J. P. (1966). The human nature of science : researchers at work in psychiatry. New York: Free Press.

Chicago

Perry, Stewart E., and John P. Spiegel. The Human Nature of Science: Researchers At Work In Psychiatry. New York: Free Press, 1966.