Sundberg, J. (1994). Sexual selection in the yellowhammer (Emberiza citrinella): The advantage of being yellow. Acta Universitatis Upsaliensis ; Distributor, Almqvist & Wiksell International.
Citace podle Chicago (17th ed.)Sundberg, Jan. Sexual Selection in the Yellowhammer (Emberiza Citrinella): The Advantage of Being Yellow. Uppsala : Stockholm: Acta Universitatis Upsaliensis ; Distributor, Almqvist & Wiksell International, 1994.
Citace podle MLA (8th ed.)Sundberg, Jan. Sexual Selection in the Yellowhammer (Emberiza Citrinella): The Advantage of Being Yellow. Acta Universitatis Upsaliensis ; Distributor, Almqvist & Wiksell International, 1994.
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