Isler, K., & Van Schaik, C. P. (2008). Why are there so few smart mammals (but so many smart birds)? The Royal Society.
استشهاد بنمط شيكاغوIsler, Karin, و Carel P. Van Schaik. Why Are There so Few Smart Mammals (but so Many Smart Birds)? The Royal Society, 2008.
MLA استشهادIsler, Karin, و Carel P. Van Schaik. Why Are There so Few Smart Mammals (but so Many Smart Birds)? The Royal Society, 2008.
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