Cita APA (7a ed.)

Orr, R. T. (1970). Animals in migration. Collier Macmillan.

Cita Chicago Style (17a ed.)

Orr, Robert T. Animals in Migration. New York: Collier Macmillan, 1970.

Cita MLA (9a ed.)

Orr, Robert T. Animals in Migration. Collier Macmillan, 1970.