George, Jennifer M.
Prentice Hall,, 2002
Buku Teks
Schermerhorn, John R.
John Wiley & Sons, 1991
Buku Teks
Moorhead, Gregory
South-Western Cengage Learning, 2012
Buku Teks
McShane, Steven Lattimore
McGraw-Hill, 2003
Multimedia
Luthans, Fred
McGraw-Hill , 1985
Buku Teks