Coba jelasin Bacaan tambahan dari Gunung Santubong dong

National Parks of Sarawak, by Hans P. Hazebroek, Abang Kashim bin Abang Morshidi. ISBN 983-812-032-4.

The Encyclopedia of Malaysia, ISBN 981-3018-47-X.

On the Law Which Has Regulated the Introduction of New Species .

AR Wallace travelog to Borneo and the Malay World .