Antti Ahlava, Harry Edelman, editor
Tailor and Francis Group, 2009
Buku Teks
Eckbo, Garrett, author
McGraw-Hill, 1964
Buku Teks
Hedman, Richard, author
Planners, 1984
Buku Teks
Levitt, David, author
Routledge, 2018
Buku Teks
Thompson, Connie, author
[American Society for Training and Development Press;, ], 1998
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