APA (7th ed.) Citation

Bird, W. (1991). The orgin of species revisited: The theories of evolution and of abrupt appearance. Regency.

Chicago Style (17th ed.) Citation

Bird, W.R. The Orgin of Species Revisited: The Theories of Evolution and of Abrupt Appearance. Tennessee: Regency, 1991.

MLA (9th ed.) Citation

Bird, W.R. The Orgin of Species Revisited: The Theories of Evolution and of Abrupt Appearance. Regency, 1991.

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