Sefcek, J., & King, J. (2007). Chimpanzee Facial Symmetry: A Biometric Measure of Chimpanzee Health. American Journal of Primatology. https://doi.org/10.1002/ajp.20426
Sefcek, Jon, and James King. 2007. “Chimpanzee Facial Symmetry: A Biometric Measure of Chimpanzee Health”. American Journal of Primatology. https://doi.org/10.1002/ajp.20426.
Sefcek, J., and J. King. Chimpanzee Facial Symmetry: A Biometric Measure of Chimpanzee Health. American Journal of Primatology, 1 Nov. 2007, doi:10.1002/ajp.20426.