Edwards, Kenneth W., author
American Management Association, 2007
eBooks
Cagle, Ronald B., author
[American Management Association, ], 2005
eBooks
Pantry, Sheila, author
Facet Publishing, 2003
Buku Teks
Dupre, Flint O, author
Harper & Row, 1967
Buku Teks
Markless, Sharon, author
Facet Publishing, 2006
Buku Teks