Taguchi, Sherrie Gong, author
[American Management Association, ], 2002
eBooks
Levesque, Joseph D., author
Prentice-Hall, 1996
Buku Referensi
Harvard Business School Press , 2004
Buku Teks
Collins, Eliza G.C., author
Binarupa Aksara, 1994
Buku Teks
Amin Widjaja Tunggal, author
Bumi Aksara, 199
Buku Referensi