de Heij, M. E., Gustafsson, L., & Brommer, J. E. (2011). Experimental manipulation shows that the white wing patch in collared flycatchers is a male sexual ornament. Blackwell Publishing Ltd.
Chicago-tyylinen lähdeviittausde Heij, Maaike E., Lars Gustafsson, ja Jon E. Brommer. Experimental Manipulation Shows That the White Wing Patch in Collared Flycatchers Is a Male Sexual Ornament. Blackwell Publishing Ltd, 2011.
MLA-viitede Heij, Maaike E., Lars Gustafsson, ja Jon E. Brommer. Experimental Manipulation Shows That the White Wing Patch in Collared Flycatchers Is a Male Sexual Ornament. Blackwell Publishing Ltd, 2011.
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