Agger, Ben
Critical social theories : an introduction
Oxford University Press, 2013
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Fuchs, Christian
Social Media: A Critical Introduction
Sage Publications, 2014
 eBooks
Research methods in geography: a critical introduction
Basil Gomez and John Paul Jones III, edited
Wiley-Blackwell, 2010
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Weiss, Robert S.
Statistics in social research : an introduction
N.Y. Wiley , 1968
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Labovitz, Sanford
Introduction to social research
McGraw-Hill, 1981
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