APA (7 ম সংস্করণ) উদ্ধৃতি

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

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

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

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

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