10320
10321
Creswell, John W.
Research design :qualitative, quantitative, and mixed methods approaches
Thousand Oaks
Sage Publications
9002c
xxix, 260 p
Includes bibliographical references )p. 237-245( and indexes
John W. Creswell
3rd ed
Research Methodology ، Social sciences
Statistical methods ، Social sciences
27
.
003
H
62
.
C6963
2009
AU
TI
