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