Riggio, Ronald E., author
Pearson, 2013
Buku Teks
Riggio, Ronald E., author
Routledge, 2016
Buku Teks
Muchinsky, Paul M., author
Wadsworth, 2000
Buku Teks
Bass, Bernard M., author
Allyn and Bacon, 1973
Buku Teks
Landy, Frank J., author
Wiley, 2013
Buku Teks