Cita APA (7a ed.)

Farmer, P. J. (1970). Behind the walls of Terra. Ace Publishing Corporation.

Cita Chicago Style (17a ed.)

Farmer, Philip José. Behind the Walls of Terra. New York: Ace Publishing Corporation, 1970.

Cita MLA (9a ed.)

Farmer, Philip José. Behind the Walls of Terra. Ace Publishing Corporation, 1970.