Jefferson, Michael
Cavendish Publishing , 1994
Buku Teks
Daniels, Kathy
Chartered Institute of Personnel and Development, 2012
Buku Teks SO
Daniels, Kathy
Chartered Institute of Personnel and Development, 2012
Buku Teks SO
Whincup, Michael H., 1929-
Butterworth-Heinemann, 1995
Buku Teks
Painter, Richard W.
Pluto Press, 1993
Buku Teks