Cita APA

Roze, U. (1989). The North American porcupine. Washington, D.C.: Smithsonian Institution Press.

Citación estilo Chicago

Roze, Uldis. The North American Porcupine. Washington, D.C.: Smithsonian Institution Press, 1989.

Cita MLA

Roze, Uldis. The North American Porcupine. Washington, D.C.: Smithsonian Institution Press, 1989.