Merriam S., Tisdell E. Qualitative Research: A Guide to Design and Implementation

4th ed. — John Wiley & Sons, 2016. — 346 p. — ISBN 9781119003601.The Design of Qualitative Research.
What Is Qualitative Research?
Six Common Qualitative Research Designs.
Expanding the Qualitative Paradigm: Mixed Methods, Action, Critical, and Arts Based Research.
Designing Your Study and Selecting a Sample.
Collecting Qualitative Data.
Conducting Effective Interview.
Being a Careful Observer.
Mining Data from Documents and Artifacts.
Analyzing and Reporting Qualitative Data.
Qualitative Data Analysis.
Dealing with Validity, Reliability, and Ethics.
Writing Up Qualitative Research.
Appendix: The Methodology Section of a Qualitative Research Study Methods.
Design of the Study.
Sample Selection.
Data Collection.
Data Analysis.
Validity and Reliability.
Researcher Bias and Assumptions.