Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

Philbrick, Allen K. This Human World. New York: John Wiley Sons, 1963.

Cita MLA (8a ed.)

Philbrick, Allen K. This Human World. John Wiley Sons, 1963.