Zainal Asril, author
Rajawali, 2012
Buku Teks
Dewi Tristantini Budi, author
Fakultas Teknik Universitas Indonesia, 2000
UI - Laporan Penelitian
DePorter, Bobbi, author
Kaifa, 2001
Buku Teks
Johnson, LouAnne, author
Jossey-Bass, 2011
Buku Teks
Russo, Cat Sharpe, author
[American Society for Training and Development Press, American Society for Training and Development Press], 1999
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