APA-Zitierstil (7. Ausg.)

(2002). Field guide to the birds of North America (4th ed., fully rev. and updated.). National Geographic.

Chicago-Zitierstil (17. Ausg.)

Field Guide to the Birds of North America. 4th ed., fully rev. and updated. Washington, D.C: National Geographic, 2002.

MLA-Zitierstil (9. Ausg.)

Field Guide to the Birds of North America. 4th ed., fully rev. and updated. National Geographic, 2002.