edited by Alton C. Bartlett, Thomas A. Kayser
Prentice-Hall, 1973
Buku Teks
Schermerhorn, John R., author
John Wiley & Sons, 2003
Buku Teks
Kreitner, Robert, author
McGraw-Hill, 2010
Buku Teks
Vecchio, Robert P., author
Dryden Press, 1995
Buku Teks
Kreitner, Robert, author
McGrw-Hill , 2001
Buku Teks