William Warren ... [and others] ; phographer, Luca Invernizzi Tettoni

Periplus editions, 1997

 Buku Referensi

Dumarcay, Jacques, author

Orchid Press, 2003

 Buku Teks

FRIM-UNDP/GEF peat Swamp Forest Project, 2005

 Buku Teks

Lall, Vikram, author

Malaysia JF Publishing, 2014

 Buku Referensi

Chihara, Daigoro, author

E.J. Brill , 1996

 Buku Referensi