Grogono, Peter, author
PBI, 1983
Buku Teks
Hasemer, Tony, author
Addison-Wesley, 1984
Buku Teks
Long, Larry E., author
Prentice-Hall, 1992
Buku Referensi
Moverley, John, author
Harper-Collins, 1986
Buku Teks
Osborne, Adam, author
McGraw-Hill, 1983
Buku Teks