Karlgren, Bernhard, author
Stockholm: The Museum of Far Eastern Antiquities, 1950
Buku Teks
Reid, J. H. Stewart
Longmans, Green and Co. , 1959
Buku Teks
Hutheesing, Raja
Orient Longmans,, 1960
Buku Teks
Hamilton, Mark, author
Neo-tech books, 2000
Buku Teks
Ministry of Foreign Affairs Malaysia, 1967
Buku Teks