Mitchell, Ewan
Vertex Books, 1970
Buku Teks SO
David, Mark
[American Society for Training & Development Press, American Society for Training & Development Press], 2002
eBooks
Chambers, John Carlton, 1928-
John Wiley & Sons, 1974
Buku Teks
Chambers, John Carlton, 1928-
John Wiley & Sons, 1974
Buku Teks
Tagliaferri, Louis E.
John Wiley & Sons, 1979
Buku Teks