Madsen, E. A., Persson, T., Sayehli, S., Lenninger, S., & Sonesson, G. (2013). Chimpanzees show a developmental increase in susceptibility to contagious yawning: A test of the effect of ontogeny and emotional closeness on yawn contagion. Public Library of Science (PLoS).
Chicago Style (17th ed.) CitationMadsen, Elainie Alenkær, Tomas Persson, Susan Sayehli, Sara Lenninger, and Göran Sonesson. Chimpanzees Show a Developmental Increase in Susceptibility to Contagious Yawning: A Test of the Effect of Ontogeny and Emotional Closeness on Yawn Contagion. Public Library of Science (PLoS), 2013.
MLA (8th ed.) CitationMadsen, Elainie Alenkær, et al. Chimpanzees Show a Developmental Increase in Susceptibility to Contagious Yawning: A Test of the Effect of Ontogeny and Emotional Closeness on Yawn Contagion. Public Library of Science (PLoS), 2013.