Coleman, James T., author
Reston Publishing, 1982
Buku Teks
Gupta, K.C., author
Wiley Eastern, 1979
Buku Teks
Wheeler, Gershon J.
Prentice-Hall, 1978
Buku Teks
Booton, Richard C., author
John Wiley & Sons, 1992
Buku Teks
Fuller, A.J. Baden, author
Pergamon Press, 1979
Buku Teks