Wong, Ho Yin
Business Expert Press, 2011
Buku Teks
Nelson, Sandra
[American Management Association, ], 2009
eBooks
Sudjic, Deyan
Mitchell Beazley, 1986
Buku Referensi
Paulson, Edward
Prenada Media, 2003
Buku Teks SO
Solovic, Susan Wilson
[American Management Association;American Management Association, American Management Association], 2012
eBooks