Jackson, Paul, author
Chancellor, 1994
Buku Referensi
Rogers, Wayne, author
Amacom, 2011
Buku Teks
Rogers, Wayne, 1933- , author
[American Management Association, ], 2011
eBooks
Entrepreneur Press Rich Mintzer
Entepreneur Press, 2011
Buku Teks
Greene, Gardiner G., author
McGraw-Hill, 1975
Buku Teks