Jacobs, F. Robert, author
McGraw-Hill/Irwin, 2011
Buku Teks
Artikel Jurnal
Chopra, Sunil, 1960-, author
Prentice-Hall, 2001
Buku Teks
Neef, Dale, author
[American Management Association, ], 2004
eBooks
Reyer, Pedro M., author
McGraw-Hill, 2011
Buku Teks