Chalofsky, Neal
American Society for Training & Development Press, 2001
eBooks
Fern, Edward F.
Sage, 2001
Buku Teks
edited Graham R. Walden
Sage, 2012
Buku Referensi
Morgan, David, L.
Sage, 2019
Buku Teks
Smith, Joan Macfarlance
Routledge & K. Paul, 1972
Buku Teks