Gullick, J M
Ernest Benn, 1969
Buku Teks
Edmonds, I.G
Bobbs-Merrill, 1973
Buku Teks
edited by Lam Seng Fatt
Kementerian Kebudayaan, Kesenian dan Warisan Malaysia, 2007
Buku Referensi
Ryan, N J
Oxford Univ. Press, 1967
Buku Teks
Miller, Harry
Frederick A. Praeger, 1966
Buku Teks