Camrbell. (1964). The oxford book of birds (4th ed.). Oxford University Press.
Citación estilo ChicagoCamrbell. The Oxford Book of Birds. 4th ed. Oxford University Press, 1964.
Cita MLACamrbell. The Oxford Book of Birds. 4th ed. Oxford University Press, 1964.
Warning: These citations may not always be 100% accurate.