Before revision: J. Andrew 1963 "Comment on The Essential Morphological Basis for Human Culture" Alan Bryan Current Anthropology 4: 301–303 , p. 301Alan Bryan 1963 "The Essential Morphological basis for Human Culture" Current Anthropology 4: 297Keleman 1963 "Comment on The Essential Morphological Basis for Human Culture" Alan Bryan Current Anthropology 4: 301–303 p.304 W. C. McGrew 1998 "Culture in nonhuman primates?"
After revision: J. Andrew 1963 "Comment on The Essential Morphological Basis for Human Culture" Alan Bryan Current Anthropology 4: 301–303 301 Bryan 1963 "The Essential Morphological basis for Human Culture" Current Anthropology 4: 297Keleman 1963 "Comment on The Essential Morphological Basis for Human Culture" Alan Bryan Current Anthropology 4: 301–303 304Alan W. C. McGrew 1998 "Culture in nonhuman primates?"