Czajka, C., Braun, M. P., & Wink, M. (2011). Resource use of non-native Ring-necked Parakeets (Psittacula krameri) and native Starlings (Sturnus vulgaris) in Central Europe. The open ornithology journal, 4(5), . https://doi.org/10.2174/1874453201104010017
Chicago-Zitierstil (17. Ausg.)Czajka, Christina, Michael P. Braun, und Michael Wink. "Resource Use of Non-native Ring-necked Parakeets (Psittacula Krameri) and Native Starlings (Sturnus Vulgaris) in Central Europe." The Open Ornithology Journal 4, no. 5 (2011). https://doi.org/10.2174/1874453201104010017.
MLA-Zitierstil (9. Ausg.)Czajka, Christina, et al. "Resource Use of Non-native Ring-necked Parakeets (Psittacula Krameri) and Native Starlings (Sturnus Vulgaris) in Central Europe." The Open Ornithology Journal, vol. 4, no. 5, 2011, https://doi.org/10.2174/1874453201104010017.