Monkeys Outdo Us In Flexible Thinking - Futurity
Youth research explores gender differences among primates - News - Utrecht University
Other than humans, are there transgender primates? - Quora
Frans de Waal on Gender - Smithsonian Associates
Primatology - Wikipedia
Frans de Waal: 'In other primates, I don't find the kind of intolerance we have', Primatology
Primatologist Frans de Waal explores gender, sex and identity in 'Different
Chimpanzee Non-Fiction
Different: What apes can teach us about gender - Frans de Waal
What can apes can teach us about gender?
What can apes can teach us about gender?