Berg, Å. (1991). Ecology of curlews (Numenius arquata) and lapwings (Vanellus vanellus) on farmland. Swedish University of Agricultural Sciences, Dept. of Wildlife Ecology.
Citação do estilo Chicago (17ª 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.
Citação MLA (8ª ed.)Berg, Åke. Ecology of Curlews (Numenius Arquata) and Lapwings (Vanellus Vanellus) on Farmland. Swedish University of Agricultural Sciences, Dept. of Wildlife Ecology, 1991.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.