Gohen, Michael D., author
McGraw-Hill, 1974
Buku Teks
The Conference Board; editor, Edward C. Bursk
The Free Press, 1973
Buku Teks
Barnes, John A., author
American Management Association, 2005
eBooks
Kouzes, James M., author
Erlangga, 2004
Buku Teks
edited by Donald Snow ; foreword by Patrick F. Noonan
Island Press, 1992
Buku Teks