Cita APA (7a ed.)

Tilford, T. (2008). The complete book of hummingbirds. Thunder Bay Press.

Cita Chicago Style (17a ed.)

Tilford, Tony. The Complete Book of Hummingbirds. San Diego, Calif.: Thunder Bay Press, 2008.

Cita MLA (8a ed.)

Tilford, Tony. The Complete Book of Hummingbirds. Thunder Bay Press, 2008.

Precaución: Estas citas no son 100% exactas.