Barber, Noel
Wevbright and Tallev, 1971
Buku Teks
Barber, Noel
Macmillan, 1981
Buku Teks
Comber, Leon, author
Institute of South East Asia Studies, 2015
eBooks
Groban, Josh
Reprise Records, 2007
Multimedia
Misbakhul Khaer, author
Program Pascasarjana Universitas Indonesia, 2005
UI - Tesis (Membership)