Routledge, 1997
Buku Teks
Bernays, Edward L., author
Richard Rosen Press, 1961
Buku Teks
Minife, James M., author
McClelland and Stewart Limited, 1964
Buku Teks
edited by Pawin Chatchavalpongpun
Institute of South East Asia Studies, 2012
eBooks
Gardner, Paul F., author
1999
Artikel Jurnal