Feitelberg, Susan, author
American Management Association, 2006
eBooks
Weinstein, Bob, author
John Wiley & Sons, 1982
Buku Teks
Speinkel, Beryl W., author
Dow Jones-Irwin, 1977
Buku Teks
Fong, Wai Mun, author
McGrawHill, 2004
Buku Teks
Andersen, Carl E., author
Dow Jones-Irwin, 1986
Buku Teks