APA Zitierstil

Creswell, J. W. (2009). Research design: Qualitative, quantitative, and mixed methods approaches (3rd Ed.). Sage.

Chicago Zitierstil

Creswell, John W. Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. 3rd Ed. New Delhi: Sage, 2009.

MLA Zitierstil

Creswell, John W. Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. 3rd Ed. Sage, 2009.

Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.