Cita APA (7th ed.)

Kruif, P. D. (1948). The male hormone. Permabooks.

Cita Chicago (17th ed.)

Kruif, Paul De. The Male Hormone. New York: Permabooks, 1948.

Cita MLA (9th ed.)

Kruif, Paul De. The Male Hormone. Permabooks, 1948.