Schermerhorn, John R., author
John Wiley & Sons, 2003
Buku Teks
Carroll, Stephen J., author
John Wiley & Sons, 1977
Buku Teks
Robbins, Stephen P., author
Pearson, 2017
Buku Teks
Allyn and Bacon, 1990
Buku Teks
Tompkins, Teri C.
Prentice-Hall, 2002
Buku Teks