Falletta, Salvatore V.
[American Society for Training & Development;, ], 2001
eBooks
Roberts, M.B.V.
Thomas Nelson & Sons, 1971
Buku Teks
Muller, Walter H.
Macmillan, 1979
Buku Teks
McGilvery, R.W.
WB. Saunders, 1972
Buku Teks
Smith, Robert M.
McGraw-Hill, 1975
Buku Teks