Dante Cicchetti, editor
Wiley , 2016
Buku Teks
Butzer, Karl W., author
Cambridge University Press, 1982
Buku Teks
Argyris, Chris, author
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Buku Teks
Richard Knowles, Jon Shaw, Iain Docherty, editor
BlackWell , 2008
Buku Teks
Adams, Paul C., author
Blackwell Publishing, 2009
Buku Teks