Extreme earth: wildlife, wild places, wild weather
Robert Cornraads and five outhers, author
Reader's Digest, 2015
 Buku Referensi
Cubitt, Gerald
Wild Indonesia : the wildlife and scenery of the Indonesian archipelago
MIT Press, 1992
 Buku Referensi
Wild, Ray
The techniques of production management / by Ray Wild
Holt, Rinehart and Winston , 1975
 Buku Teks
Management and production readings / edited by Ray Wild
Penguin, 1981
 Buku Teks
Junaidi Payne
Wild Sabah : the magnificent wildlife and rainforest of Malaysian Borneo / Junaidi Payne; photographs by Cede Prudente
Beaufoy Books, 2010
 Buku Referensi