Barker, Stephen
Pearson, 2012
Buku Teks
Chin, Gary
[American Management Association, ], 2004
eBooks
Lock, Dennis
Gower, 2003
Buku Teks
Vicky Permana
Fakultas Ilmu Komputer Universitas Indonesia, 2016
UI - Tugas Akhir
Russell, Doug
Amacom, 2011
Buku Teks