Bird, W. (1991). The orgin of species revisited: The theories of evolution and of abrupt appearance. Regency.
芝加哥风格引文Bird, W.R. The Orgin of Species Revisited: The Theories of Evolution and of Abrupt Appearance. Tennessee: Regency, 1991.
MLA引文Bird, W.R. The Orgin of Species Revisited: The Theories of Evolution and of Abrupt Appearance. Regency, 1991.
警告：这些引文格式不一定是100％准确.