Hughes, Edward
Longman, 1995
Buku Teks SO
Hughes, Edward
John Wiley & Sons, 1987
Buku Teks SO
Hughes, Edward
Longman, 1991
Buku Teks SO
Baer, Chales J.
McGraw-Hill, 1980
Buku Teks SO
Bolton, William, 1933-
Longman Scientific & Technical, 1992
Buku Teks