APA

Saul J. R., . (1977). The birds of prey. New York: McGraw-Hill.

Chicago

Saul John Ralston, . 1977. The birds of prey. New York: McGraw-Hill.

Harvard

Saul J. R., . (1977). The birds of prey. New York: McGraw-Hill.

MLA

Saul John Ralston, . The birds of prey. New York: McGraw-Hill. 1977.