APA Citation

Austin, O. L., Singer, A., & Zim, H. S. 1. (1961). Birds of the world. London: The Hamlyn publishing group limited.

Chicago Style Citation

Austin, Oliver Luther, Arthur Singer, and Herbert S. 1909-1994 Zim. Birds of the World. London: The Hamlyn publishing group limited, 1961.

MLA Citation

Austin, Oliver Luther, Arthur Singer, and Herbert S. 1909-1994 Zim. Birds of the World. London: The Hamlyn publishing group limited, 1961.

Warning: These citations may not always be 100% accurate.