Creswell, J. W. (2011). Research Design: Qualitative, Quantitative, and Mixed Methods Approaches (3rd ed.). SAGE Publications India Pvt. Ltd.
Citazione stile Chigago Style (17a edizione)Creswell, John W. Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. 3rd ed. New Delhi: SAGE Publications India Pvt. Ltd, 2011.
Citatione MLA (9a ed.)Creswell, John W. Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. 3rd ed. SAGE Publications India Pvt. Ltd, 2011.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.