Traister, John E., author
Prentice-Hall, 1988
Buku Teks
Porter, W. Thomas, author
PWS-Kent , 1987
Buku Teks
Porter, W. Thomas, author
Kent, 1981
Buku Teks
FitzGerald, Jerry, author
Calif J. FitzGerald and Associates , 1990
Buku Teks
Edwards, Harry J., author
McGraw-Hill, 1986
Buku Teks