Bush, Tony, author
IRCiSoD, , 2006
Buku Teks
McCorkle, Chester O., author
Jossey-Bass Publishers, 1982
Buku Teks
David, Fred R., author
Prentice-Hall, 1997
Buku Teks
David, Fred R., author
Prentice-Hall, 1995
Buku Teks
Sharplin, Arthur, author
McGraw-Hill, 1985
Buku Teks