Focus Groups as Qualitative Research (Qualitative Research Methods) by David L. Morgan
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Practical Sampling (Applied Social Research Methods) by Gary T. Henry
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Research Design: Qualitative, Quantitative, and Mixed Methods Approaches (2nd Edition) by John W. Creswell |
Case Study Research: Design and Methods, Third Edition, Applied Social Research Methods Series, Vol 5 by Robert K. Yin
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Ethnographic Decision Tree Modeling (Qualitative Research Methods) by C . H. Gladwin
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