Vangundy, Arthur B., author
American Management Association, 2007
eBooks
Siegel, Liza, author
American Management Association, 2006
eBooks
Elle, Klaus, author
Springer, 2011
eBooks
Baker, Stephen, 1921-2004, author
McGraw-Hill, 1979
Buku Teks
Tam, Marilyn, author
Gramedia Pustaka Utama, 2007
Buku Teks