By Fouts, Roger, Mills, Stephen, Goodall, Jane
By Bolhuis, Johan J.
By Dunbar, Robin, Barrett, Louise
By Fossey, Dian
By Wrangham, Richard, Peterson, Dale
By Sapolsky, Robert M
By Singer, Peter
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By Blum, Deborah
By Rodman, C
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By Goodall, Jane, Neugebauer, Michael
By Boesch, Christophe
By DK
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By Arcus Foundation
By Alison Richard
By Duane Quiatt (University of Colorado), Vernon Reynolds (University of Oxford)
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By Shirley C. Strum, Linda Marie Fedigan
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By Lawick-Goodall, Jane van.