Watts, E. S. (1975). Biology of the living primates. W. C. Brown Co..
Lua i Stíl Chicago (17ú heag.)Watts, Elizabeth S. Biology of the Living Primates. Dubuque, Iowa: W. C. Brown Co., 1975.
Lua MLA (8ú heag.)Watts, Elizabeth S. Biology of the Living Primates. W. C. Brown Co., 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.