APA (7. basım) Alıntı

Creswelll W. John. (2009). Research Design. SAGE.

Chicago Style (17. basım) Atıf

Creswelll W. John. Research Design. London: SAGE, 2009.

MLA (9th ed.) Atıf

Creswelll W. John. Research Design. SAGE, 2009.