lee, Kunwoo, author
Addison-Wesley Longman, Inc., 1999
Buku Teks
Stern, Robert A., author
John Wiley, 1973
Buku Teks
Pigford, D.V., author
Boston Boyd & Fraser , 1990
Buku Teks
Bal, Henri, author
Prentice-Hall, 1990
Buku Referensi
Turban, Efraim, 1930-, author
Prentice-Hall, 2005
Buku Teks