Creswell, John W.
Research design: qualitative, quantitative, and mixed method approaches - 3rd ed. - Thousand Oaks, Calif. : Sage Publications, c2009. - xxix, 260 p. ;
97881321078484
Social sciences
Social sciences-Research
300.72 / CRE/R
Research design: qualitative, quantitative, and mixed method approaches - 3rd ed. - Thousand Oaks, Calif. : Sage Publications, c2009. - xxix, 260 p. ;
97881321078484
Social sciences
Social sciences-Research
300.72 / CRE/R