Ritti, R. Richard
John Wiley & Sons, 1982
Buku Teks
Ritti, R.Richard
John Wiley & Sons, 1998
Buku Teks
Kreitner, Robert, author
McGraw-Hill, 2010
Buku Teks
Luthans, Fred, author
McGraw-Hill , 1985
Buku Teks
Luthans, Fred, author
McGraw-Hill , 1981
Buku Teks