APA-Zitierstil (7. Ausg.)

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

Chicago-Zitierstil (17. Ausg.)

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

MLA-Zitierstil (9. Ausg.)

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