Berg, Å. (1991). Ecology of curlews (Numenius arquata) and lapwings (Vanellus vanellus) on farmland. Swedish University of Agricultural Sciences, Dept. of Wildlife Ecology.
Citace podle Chicago (17th ed.)Berg, Åke. Ecology of Curlews (Numenius Arquata) and Lapwings (Vanellus Vanellus) on Farmland. Uppsala, Sweden: Swedish University of Agricultural Sciences, Dept. of Wildlife Ecology, 1991.
Citace podle MLA (8th ed.)Berg, Åke. Ecology of Curlews (Numenius Arquata) and Lapwings (Vanellus Vanellus) on Farmland. Swedish University of Agricultural Sciences, Dept. of Wildlife Ecology, 1991.
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