Creswell, John W. Qualitative inquiry and research design : Choosing among five approaches / by John W. Creswell, Cheryl N. Poth. - 4th ed. - London : Sage ; c2018. - xxv,459p. ; ill. ; 23 cm. ISBN: 9781506330204 Subjects--Topical Terms: Data analysis. LC Class. No.: 658.0072 Dewey Class. No.: