I. Faridah-Hanum, author
UNDP, 2005
Buku Teks
Rusea Go, author
Forest Research Institute Malaysia (FRIM), 2008
Buku Referensi
Artikel Jurnal
Universitas Indonesia, 2014
UI - Skripsi (Membership)
Mandaliem Lembong Halim
Elex Media Komputindo, 2006
Buku Teks