Green, D.C., author
Longman, 1992
Buku Teks
Bolton, W. (William), 1933-, author
Longman Scientific & Technical, 1992
Buku Teks
Floyd, Thomas L., author
Prentice-Hall, 2003
Buku Teks
Firth, C. Barry, author
McGraw-Hill, 1979
Buku Teks
Ramabhadran, S.
Khanna, 1976
Buku Teks