Irfan Suryana, author
Psikologi Corner, 2023
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Adang Ismail, author
Pilar Media, 2006
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Baban Sarbana, author
Elex Media Komputindo, 2002
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Lykins, Lorrie, author
American Society for Training & Development, 2011
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Gramedia Pustaka Utama, 2004
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