Παραπομπή σε μορφή APA (7η εκδ.)

Creswell, J. W. (2003). Research design: Qualitative, quantitative and mixed methods approaches (2nd ed.). Sage.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Creswell, John W. Research Design: Qualitative, Quantitative and Mixed Methods Approaches. 2nd ed. London: Sage, 2003.

Παραπομπή σε μορφή MLA (8th εκδ.)

Creswell, John W. Research Design: Qualitative, Quantitative and Mixed Methods Approaches. 2nd ed. Sage, 2003.