Scott, Kim, author
Pan Books, 2019
Buku Teks
Tingley, Judith C., author
American Management Association;;, 1996
eBooks
Mortensen, Kurt W., author
American Management Association, 2008
eBooks
Tam, Marilyn, author
Gramedia Pustaka Utama, 2007
Buku Teks
Jensen, Doug, author
American Management Association, 2007
eBooks