Boehrer, B. T. (2004). Parrot culture: Our 2,500-year-long fascination with the world's most talkative bird. University of Pennsylvania Press.
Chicago-referens (17:e uppl.)Boehrer, Bruce Thomas. Parrot Culture: Our 2,500-year-long Fascination with the World's Most Talkative Bird. Philadelphia: University of Pennsylvania Press, 2004.
MLA-referens (9:e uppl.)Boehrer, Bruce Thomas. Parrot Culture: Our 2,500-year-long Fascination with the World's Most Talkative Bird. University of Pennsylvania Press, 2004.
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