Artikel Jurnal
Plattner, Francis B.
[American Society for Training and Development Press, American Society for Training and Development Press], 2001
eBooks
Mager, Robert F.
Fearon Publ., 1975
Buku Teks
Sharpe, Cat
[American Society for Training and Development Press, American Society for Training and Development Press], 2000
eBooks
Dillman, Caroline Matheny
Lear Siegler, 1972
Buku Teks