Cita APA (7th ed.)

Creswell, J. W., & Creswell, J. D. Research design: Qualitative, quantitative, and mixed methods approaches (6th ed.). SAGE Publications.

Cita Chicago (17th ed.)

Creswell, John W., i J. David Creswell. Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. 6th ed. Los Angeles: SAGE Publications.

Cita MLA (9th ed.)

Creswell, John W., i J. David Creswell. Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. 6th ed. SAGE Publications.