Pough, R. H. (1957). Audubon western bird guide land,water, and games birds Western North America, including Alaska, from Mexico to Bering and Strait and the Arctic Ocean. Doubleday.
Lua i Stíl Chicago (17ú heag.)Pough, Richard H. Audubon Western Bird Guide Land,water, and Games Birds Western North America, Including Alaska, from Mexico to Bering and Strait and the Arctic Ocean. New York: Doubleday, 1957.
Lua MLA (9ú heag.)Pough, Richard H. Audubon Western Bird Guide Land,water, and Games Birds Western North America, Including Alaska, from Mexico to Bering and Strait and the Arctic Ocean. Doubleday, 1957.
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