Kumar, Ranjit
Research methodology : a step-by-step guide for beginners
SAGE, 2014
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Foundations for research: methods of inquiry in education and the social sciences
New jersey, 2004
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Neuman, William Lawrence, 1950-
Social research methods: qualitative and quantitative approaches
Allyn and Bacon, 1994
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Doing social research: a global context / Calaire Wagner, Barbara B. Kawulich, Marks Garner, editor
McGraw-Hill, 2012
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Bell, Judith
Doing your research project: a guide for first time researchers in education and social science
Open University Press, 1993
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