Jensen, Doug
American Management Association, 2007
eBooks
Groves, Patricia
Harper Collines Publishers , 1992
Buku Teks
Deming, Vasudha Kathleen
McGraw-Hill, 2004
Buku Teks
Institute of Management and Administration (IOMA)
John Wiley & Sons, 2006
Buku Teks
Resume, Service
ARCO Publishing Company, Inc., 1967
Buku Teks