Shearouse, Susan H., author
[American Management Association;, ], 2011
eBooks
Pugh, June Blankenship, author
W.B. Saunders, 1997
Buku Teks
Martin, Dick, author
American Management Association, 2007
eBooks
Esposito, John L., author
Gallup Press, 2007
Buku Teks
Kennedy, Robert F., 1925-1968, author
Harper & Row , 1962
Buku Teks