Leigh, Elyssebeth
McGraw-Hill, 2001
Multimedia
Thiagarajan, Sivasailam Thiagi
[American Society for Training & Development Press, American Society for Training & Development Press], 2001
eBooks
Wright, Andrew, 1937-
Cambridge University Press , 1994
Buku Teks
Kirk, James J.
McGraww-Hill, 1997
Buku Teks
Artikel Jurnal