Institute of Southeast Asian Studies, 1999
Buku Teks
Human Relations Area Files, Inc, 1963
Buku Teks
Legge, John D.
Prentice-Hall, 1964
Buku Teks
edited by Eric Oey
APA Publications , 1990
Buku Referensi
Dalton, Bill
Odyssey Guides , 1991
Buku Referensi