APA

Sprunt A., May J. B., . (1955). North American birds of prey. New York: Published under the sponsorship of the National Audubon Society by Harper.

Chicago

Sprunt Alexander, May John Bichard, . 1955. North American birds of prey. New York: Published under the sponsorship of the National Audubon Society by Harper.

Harvard

Sprunt A., May J. B., . (1955). North American birds of prey. New York: Published under the sponsorship of the National Audubon Society by Harper.

MLA

Sprunt Alexander, May John Bichard, . North American birds of prey. New York: Published under the sponsorship of the National Audubon Society by Harper. 1955.