APA (7th ed.) Citation

Roberts, A. (1957). Roberts birds of South Africa ([Rev. ed.). Published for the trustees of the South African Bird Book Fund.

Chicago Style (17th ed.) Citation

Roberts, Austin. Roberts Birds of South Africa. [Rev. ed. Cape Town]: Published for the trustees of the South African Bird Book Fund, 1957.

MLA (9th ed.) Citation

Roberts, Austin. Roberts Birds of South Africa. [Rev. ed. Published for the trustees of the South African Bird Book Fund, 1957.