Cita APA (7a ed.)

Check list of birds of the world. (1931). Check list of birds of the world. Harvard University Press.

Cita Chicago Style (17a ed.)

Check list of birds of the world. Check List of Birds of the World. Cambridge - EEUU: Harvard University Press, 1931.

Cita MLA (8a ed.)

Check list of birds of the world. Check List of Birds of the World. Harvard University Press, 1931.