^Bhagwat, S. B. Foundation of Geology. Global Vision, 2009, pp. 232–235:
"The Hominidae form a taxonomic family, including four extant genera: humans, chimpanzees, gorillas, and orangutans."
Groves, Colin P. "Great Apes: The Conflict of Gene-Pools, Conservation and Personhood" in Emily Rousham, Leonard Freedman, and Rayma Pervan. Perspectives in Human Biology: Humans in the Australasian Region. World Scientific, 1996, p. 31:
"The recognition that we as a species are not phylogenetically separated from other animals, but are nested within the primate group known as the Great Apes, is no longer controversial. Goodman (1963) proposed on this basis to include the great apes (orang utan, gorilla and chimpanzee) in the family Hominidate, a view revived by Groves (1986) and increasingly adopted since then. Increasingly, too, the vernacular term 'Great Apes' has come to be used as a pure synonym for Hominidae, so that humans are also 'Great Apes.' The only remaining systemic controversy seems to be whether chimpanzees and gorillas together form the sister-group of humans, or chimpanzees and humans together constitute the sister-group of gorillas."
Karcher, Karen. "The Great Ape Project" in Marc Bekoff (ed.). The Encyclopedia of Animal Rights and Animal Welfare. Greenwood, 2009, pp. 185–187:
"The Great Ape Project (GAP) seeks to extend the scope of three basic moral principles to all members of what the GAP founders call the five great ape species (humans, chimpanzees, bonobos, gorillas, and orangutans)."
^ 2.02.1Goodall, Jane in Paola Cavalieri & Peter Singer (eds.) The Great Ape Project: Equality Beyond Humanity. St Martin's Griffin, 1994.
Dawkins, Richard. "Gaps in the Mind" (页面存档备份,存于互联网档案馆) in Paola Cavalieri & Peter Singer (eds.) The Great Ape Project: Equality Beyond Humanity. St Martin's Griffin, 1994.
Cavalieri, Paola & Singer, Peter (eds.) The Great Ape Project: Equality Beyond Humanity. St Martin's Griffin, 1994.