APA-Zitierstil (7. Ausg.)

Williams, J. G. (1963). A Field guide to the birds of East and Central Africa. Houghton Mifflin.

Chicago-Zitierstil (17. Ausg.)

Williams, John G. A Field Guide to the Birds of East and Central Africa. Boston: Houghton Mifflin, 1963.

MLA-Zitierstil (9. Ausg.)

Williams, John G. A Field Guide to the Birds of East and Central Africa. Houghton Mifflin, 1963.