Daniels, Kathy
Chartered Institute of Personnel and Development, 2012
Buku Teks
Whincup, Michael H., 1929-
Butterworth-Heinemann, 1995
Buku Teks
Whincup, Michael H., 1929-
Butterworth-Heinemann, 1995
Buku Teks
Bowers, John, 1956-
Blackstone Press, 1996
Buku Teks
Keenan, Denis T.
Pitman, 1970
Buku Teks