Prerau, David S.
Addison-Wesley, 1990
Buku Teks
edited by Barry G. Silverman
Addison-Wesley, 1987
Buku Teks
Pigford, D.V.
Boston Boyd & Fraser , 1990
Buku Teks
Harmon, Paul
John Wiley & Sons, 1985
Buku Teks SO
Gallagher, John P.
Prentice-Hall, 1988
Buku Teks