Horwath, Jan
Routledge , 1999
Buku Teks
Anne Moen, Anders I. Morch, Sami Paavola, editor
[, Sense], 2012
eBooks
Slavin, Robert E.
Allyn and Bacon, 1995
Buku Teks
Voosen, Deborah, author
[American Society for Training & Development Press, American Society for Training & Development Press], 2005
eBooks
Thiagarajan, Sivasailam Thiagi, author
[American Society for Training & Development Press, American Society for Training & Development Press], 2001
eBooks