Dittrich, John E.
Business Publ. Inc., 1981
Buku Teks
Robbins, Stephen P., author
Pearson, 2010
Buku Teks
Schermerhorn, John R., author
John Wiley & Sons, 1991
Buku Teks
Moorhead, Gregory, author
South-Western Cengage Learning, 2012
Buku Teks
Robbins, Stephen P., author
Prentice-Hall, 1994
Buku Teks