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Lancaster [u.a.]: MTP, 1984
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SAGE Publications, 2007
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SAGE Publications, 2001
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Horizon Research Publishing Co., Ltd., 2016
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American Psychological Association (APA), 1991
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American Psychological Association (APA), 1991
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American Psychological Association (APA), 1991
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Informa UK Limited, 2003
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Informa UK Limited, 1994
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SAGE Publications, 2007