Roddy, Dennis, author
Prentice Hall, Inc., 1980
Buku Teks
Roddy, Dennis, author
Prentice-Hall, 1995
Buku Teks
Roddy, Dennis, author
Reston Pblishing, 1982
Buku Teks
Roddy, Dennis, author
Prentice-Hall, 1984
Buku Teks
Tomasi, Wayne, author
Prentice-Hall, 1994
Buku Teks