Robbins, Stephen P., author
Prentice-Hall, 1988
Buku Teks
Robbins, Stephen P., author
Pearson, 2010
Buku Teks
Robbins, Stephen P., author
Prentice-Hall, 1994
Buku Teks
Kreitner, Robert, author
McGrw-Hill , 2001
Buku Teks
Hersey, Paul, author
Pearson, Prentice Hall, 2008
Buku Teks