Cita APA (7th ed.)

Philbrick, A. K. (1963). This human world. Wiley.

Cita Chicago (17th ed.)

Philbrick, Allen Kellog. This Human World. New York: Wiley, 1963.

Cita MLA (9th ed.)

Philbrick, Allen Kellog. This Human World. Wiley, 1963.

Atenció: Aquestes cites poden no estar 100% correctes.