Cita APA (7a ed.)

Forshaw, J. M., Howell, S., Lindsey, T., & Stallcup, R. (2002). A guide to birding. Fog City Press.

Cita Chicago Style (17a ed.)

Forshaw, Joseph Michael, Steve Howell, Terence Lindsey, y Rich Stallcup. A Guide to Birding. San Francisco, CA: Fog City Press, 2002.

Cita MLA (9a ed.)

Forshaw, Joseph Michael, et al. A Guide to Birding. Fog City Press, 2002.