Mara, D. Duncan (David Duncan), 1944-, author
John Wliley & Sons , 1983
Buku Teks
Gupta, B.R.N.
Wiley, 1986
Buku Teks
Hyde, Richard, author
E & FN Spon, 2000
Buku Teks
Duggal, K.N.
S. Chand, 1967
Buku Teks
Grosvenor Press, 1986
Buku Teks
Grosvenor Press International, 1987
Buku Teks