Camrbell. (1964). The oxford book of birds (4th ed.). Oxford University Press.
Chicago-stil citatCamrbell. The Oxford Book of Birds. 4th ed. Oxford University Press, 1964.
MLA-referensCamrbell. The Oxford Book of Birds. 4th ed. Oxford University Press, 1964.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.