APA (7th ed.) Citation

Creswell, J. W. (2009). Research design: Qualitative, quantitative, and mixed methods approaches (3a. ed.). SAGE.

Chicago Style (17th ed.) Citation

Creswell, John W. Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. 3a. ed. Los Angeles: SAGE, 2009.

MLA (9th ed.) Citation

Creswell, John W. Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. 3a. ed. SAGE, 2009.