Schlosser, Michel, author
Prentice-Hall, 1989
Buku Teks
Vollmann, Thomas E., author
Addison-Wesley, 1973
Buku Teks
Kotler, Philip, author
Holt, Rinehart and Winston , 1971
Buku Teks
William, H.P., author
John Wiley & Sons, 1978
Buku Teks
Collis, David J., author
McGraw-Hill, 1998
Buku Teks