Hwang, Pae-gang
Jain, 2006
Buku Teks
Mackenzie, Donald A.
Gramercy Books, 1994
Buku Referensi
Moncrieff, A.R. Hope
Gramercy Books, 1995
Buku Referensi
Davis, F. Hadland
Graham Brash (PTE) Ltd, 1989
Buku Teks
Werner, E. T. C.
George G. Harrap & Co. Ltd., 1922
Buku Teks SO