TY  - BOOK
AU  - Creswell, JW.
TI  - Research design: qualitative, quantitative and mixed methods approaches
SN  - 0-7619-2442-6
AV  - H62.C6963 2002 
PY  - 2002///
CY  - California
PB  - Sage Publications, Inc.
KW  - Social sciences-research-methodology
N1  - Includes bibliographical references and index
ER  -