Kolb, Robert W.
Research handbook on human rights and humanitarian law
Edward Elgar, 2013
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Schmitt, Neal W.
Research methods in human resources management
South-Western Publishing, 1991
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Bhattacharyya, Dipak Kumar
Human resource research methods
Oxford University Press , 2014
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Galtung, Johan
Theory and methods of social research
George Allen and Unwin, 1969
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Goode, William J.
Methods in social research
McGraw-Hill, 1952
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