APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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

Let op: Deze citaties zijn niet altijd 100% accuraat.