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SAGE Publications, 1986
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American Educational Research Association (AERA), 1986
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SAGE Publications, 1986
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Elsevier BV, 1986
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JSTOR, 1986
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Oxford University Press (OUP), 2010
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Wiley, 2009
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Wiley, 2009
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Wiley, 2009
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Wiley, 2008
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SAGE Publications, 2006
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SAGE Publications, 1995
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SAGE Publications, 1994
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American Psychological Association (APA), 1994
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American Psychological Association (APA), 1994
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Elsevier BV, 1993
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SAGE Publications, 1991
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Public Library of Science (PLoS), 2011
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Elsevier BV, 2002
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American Psychological Association (APA), 2008