Cita APA (7a ed.)

Pearse, A. S. (1939). Animal ecology (2nd. ed.). McGraw-Hill.

Cita Chicago Style (17a ed.)

Pearse, A. S. Animal Ecology. 2nd. ed. New York: McGraw-Hill, 1939.

Cita MLA (8a ed.)

Pearse, A. S. Animal Ecology. 2nd. ed. McGraw-Hill, 1939.