ebrary, Inc, & Batt, B. D. J. (1992). Ecology and management of breeding waterfowl. University of Minnesota Press.
Lua i Stíl Chicago (17ú heag.)ebrary, Inc, agus Bruce D. J. Batt. Ecology and Management of Breeding Waterfowl. Minneapolis: University of Minnesota Press, 1992.
Lua MLA (9ú heag.)ebrary, Inc, agus Bruce D. J. Batt. Ecology and Management of Breeding Waterfowl. University of Minnesota Press, 1992.
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