Cita APA

Sprunt, A., & Peterson, R. T. (1955). North American birds of prey. New York: Harper and Brothers.

Citación estilo Chicago

Sprunt, Alexander, y Roger Tory Peterson. North American Birds of Prey. New York: Harper and Brothers, 1955.

Cita MLA

Sprunt, Alexander, y Roger Tory Peterson. North American Birds of Prey. New York: Harper and Brothers, 1955.