Brennan, Niall, 1918-2005, author
Hill of Content, 1971
Buku Teks
Comber, Leon, author
Institute of South East Asia Studies, 2015
eBooks
Hutchison, Bruce, author
Longmans Green, 1953
Buku Teks
Raines, John C., author
Teraju, 2003
Buku Teks
Ferguson, Kitty, author
Bantam, 2011
Buku Teks