Positive psychology in practice
John Wiley & Sons, 2004
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Hefferon, Kate
Positive psychology : Theory, research and applications
McGraw-Hill, 2011
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Professional psychology : research and practice
American Psychological Association, {s.a}
Majalah, Jurnal, Buletin
Schaefer, Richard T
Racial and ethnic groups
Pearson Education, 2015
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Spector, Paul E.
Industrial and organizational psychology: research and practice
Jones & Bartllett, 2012
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