Walker, Richard
De Agostini, 1996
Buku Teks SO
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
Segal, Lloyd M., 1948-
American Management Association, 2007
eBooks