Goodall, H. Lloyd., author
Wadsworth and Cengage Learning, 2010
Buku Teks
Simmons, Annette, author
American Management Association, 2007
eBooks
Mortensen, Kurt W., author
American Management Association, 2008
eBooks
Guffey, Mary Ellen, author
Cengage Learning, 2008
Multimedia
Forsyth, Patrick, author
Institution of Engineering and Technology, 2008
eBooks