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Colombia University Press, 1980
Buku Teks
Lawrenhce Erlbaum Associates,, 2014
Buku Teks
Artikel Jurnal
Gordon, Edward E., author
[American Society for Training and Development Press;American Society for Training and Development Press, American Society for Training and Development Press], 1997
eBooks
Thomas Potthast, editor
[, Wageningen Academic], 2012
eBooks