Creswell, J. W. (1994). Research design: Qualitative & quantitative approaches. Sage Publications.
Citación estilo ChicagoCreswell, John W. Research Design: Qualitative & Quantitative Approaches. Thousand Oaks, Calif.: Sage Publications, 1994.
Cita MLACreswell, John W. Research Design: Qualitative & Quantitative Approaches. Sage Publications, 1994.
Warning: These citations may not always be 100% accurate.