Gomm, Roger
Social research methodology : a critical introduction
Palgrave-Macmillan, 2004
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Alvesson, Mats
Reflexive methodology : new vistas for qualitative research
Sage, 2013
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Qualitative research in psychology: expanding perspectives in methodology and design
Paul M. Camic, Jean E. Rhodes, Lucy Yardley
APA, 2007
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Creswell, John W.
Research design : qualitative, quantitative, approaches
Sage, 1994
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Neuman, William Lawrence, 1950-
Social research methods: qualitative and quantitative approaches
Allyn and Bacon, 2000
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