Green, J. C., & Janssen, R. B. (1975). Minnesota birds: Where, when, and how many. Published by the University of Minnesota Press, for the James Ford Bell Museum of Natural History.
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Chicago Style (17th ed.) Zitazioa
Green, Janet C., eta Robert B. Janssen. Minnesota Birds: Where, When, and How Many. Minneapolis: Published by the University of Minnesota Press, for the James Ford Bell Museum of Natural History, 1975.
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MLA (9th ed.) Zitazioa
Green, Janet C., eta Robert B. Janssen. Minnesota Birds: Where, When, and How Many. Published by the University of Minnesota Press, for the James Ford Bell Museum of Natural History, 1975.
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