Creswell, John W.
Research design: qualitative, quantitative and mixed methods approaches / John W. Creswell - Thousand Oaks, Calif. : Sage Publications,, 2009 - Xxix, 260 p. ; 26 cm.
9781452274614
H62.C6963 R2009
Research design: qualitative, quantitative and mixed methods approaches / John W. Creswell - Thousand Oaks, Calif. : Sage Publications,, 2009 - Xxix, 260 p. ; 26 cm.
9781452274614
H62.C6963 R2009