Cita APA (7a ed.)

Creswell, J. W. (2013). Research Design: Qualitative , Quantitative & Mixed Methods Approaches (3rd ed.). sage.

Cita Chicago Style (17a ed.)

Creswell, John W. Research Design: Qualitative , Quantitative & Mixed Methods Approaches. 3rd ed. New Delhi: sage, 2013.

Cita MLA (9a ed.)

Creswell, John W. Research Design: Qualitative , Quantitative & Mixed Methods Approaches. 3rd ed. sage, 2013.