APA (7th ed.) Citation

Roberts, A. (2005). Roberts birds of Southern Africa (7. ed.). Voelcker Bird Book Fund [u.a.].

Chicago Style (17th ed.) Citation

Roberts, Austin. Roberts Birds of Southern Africa. 7. ed. Cape Town: Voelcker Bird Book Fund [u.a.], 2005.

MLA (9th ed.) Citation

Roberts, Austin. Roberts Birds of Southern Africa. 7. ed. Voelcker Bird Book Fund [u.a.], 2005.