Hanna, Williard A.
American University Field Staff, 1964
Buku Teks
Archipelago Press, 2006
Buku Referensi
edited by Jan Van der Putten, Mary Kilcline Cody
NUS Press, 2009
Buku Teks
Jawan, Jayum A.
Centre for South-East Asian Studies , 1991
Buku Teks
Abdul Razak Baginda, author
Asean Academic Press, 2003
Buku Teks