Citace podle APA (7th ed.)
Black, G. (1992). Iowa birdlife. Published for the Nature Conservancy by the University of Iowa Press.
Citace podle Chicago (17th ed.)
Black, Gladys. Iowa Birdlife. Iowa City: Published for the Nature Conservancy by the University of Iowa Press, 1992.
Citace podle MLA (9th ed.)
Black, Gladys. Iowa Birdlife. Published for the Nature Conservancy by the University of Iowa Press, 1992.
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