Cita APA (7th ed.)

Creswell, J. W. (2011). Research Design: Qualitative, Quantitative, and Mixed Methods Approaches (3rd ed.). SAGE Publications India Pvt. Ltd.

Cita Chicago (17th ed.)

Creswell, John W. Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. 3rd ed. New Delhi: SAGE Publications India Pvt. Ltd, 2011.

Cita MLA (9th ed.)

Creswell, John W. Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. 3rd ed. SAGE Publications India Pvt. Ltd, 2011.