Hartley, Gregory, author
American Management Association, 2008
eBooks
Kaufman, Josh, author
Penguin, 2013
Buku Teks
edited by K. Anders, Neil Charness
Cambridge University Press, 2006
Buku Teks
Acuff, Frank L., author
American Management Association, 2008
eBooks
Fakultas Hukum UI, 1995
Buku Teks