Nowak, Ronald M.
Walker's primates of the world
The Johns Hopkins University Press, 1999
Buku Referensi
Scheele, William E.
Prehistoric man and the primates
World Publishing, 1957
Buku Teks
Malayan forest primates: ten years study in tropical rain forest / edited by David J. Charles
Plenum Press , 1980
Buku Teks