Pough, R. H. (1951). Audubon water bird guide water, game and large land birds Eastern and Central North America from Southern Texas to Central Greenland (1951). Doubleday.
Chicago-viite (17. p.)Pough, Richard H. Audubon Water Bird Guide Water, Game and Large Land Birds Eastern and Central North America from Southern Texas to Central Greenland (1951). New York: Doubleday, 1951.
MLA-viite (9. p.)Pough, Richard H. Audubon Water Bird Guide Water, Game and Large Land Birds Eastern and Central North America from Southern Texas to Central Greenland (1951). Doubleday, 1951.
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