Cita APA (7th ed.)

Creswell, J. W. (2014). Research design: Qualitative, quantitative, and mixed methods approaches (4th ed.). SAGE Publications.

Cita Chicago (17th ed.)

Creswell, John W. Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. 4th ed. Thousand Oaks: SAGE Publications, 2014.

Cita MLA (9th ed.)

Creswell, John W. Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. 4th ed. SAGE Publications, 2014.