Johannsen, Hano
Encyclopaedia of management ; dictionary of management
Crest Publishing House, 1999
 Buku Referensi
Thorne, Kaye
Encyclopaedia of management; training
Crest publishing, 1999
 Buku Referensi
Seekings, David
Encyclopaedia of management : conferences and meetings
Crest publishing, 1999
 Buku Referensi
Cortada, James W.
TQM for sales and marketing management
McGraw-Hill, 1993
 Buku Teks SO
Encyclopaedia of project management
edited by M.D. Jitendra
Anmol Publications, 1999
 Buku Referensi