Coba jelasin Rujukan dari Mayas dalam bahasa sunda dong

Primate Info Net Pongo Factsheet

Information from Grungy Ape on the difference between the two Orang-utan species

OrionSociety.org  - 'Does an orangutan find Freedom in the Gift of Words?  Do We?'

Dr. Francine Neago Directed world's first orangutan language study.

Orangutan Foundation International non-profit organization dedicated to "support the conservation and understanding of the orangutan and its rain forest habitat while caring for ex-captive individuals as they make their way back to the forest."

The Orangutan Network - Documents Orangutan cultural variation / traditions and also conservation efforts

Orang Utan Republik Education Initiative non-profit organization whose mission is to secure the future of the orangutan through programs of education and outréach in Indonésia.

Preserving orangutans and their habitat . Orangutan Language.