APA-Zitierstil (7. Ausg.)

Creswell, J. W. (1994). Research design: Qualitative & quantitative approaches. Sage Publications.

Chicago-Zitierstil (17. Ausg.)

Creswell, John W. Research Design: Qualitative & Quantitative Approaches. Thousand Oaks, Calif.: Sage Publications, 1994.

MLA-Zitierstil (8. Ausg.)

Creswell, John W. Research Design: Qualitative & Quantitative Approaches. Sage Publications, 1994.