Wauer, R. H. (2004). Birding the Southwestern national parks. Texas A&M University Press.
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Chicago-čujuhus (17. p.)
Wauer, Roland H. Birding the Southwestern National Parks. College Station: Texas A&M University Press, 2004.
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MLA-čujuhus (9. p.)
Wauer, Roland H. Birding the Southwestern National Parks. Texas A&M University Press, 2004.
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