Mackenzie, Donald A.
Gramercy Books, 1994
Buku Referensi
Hwang, Pae-gang
Jain, 2006
Buku Teks
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