Creswell, J. W. (2011). Research Design: Qualitative, Quantitative, and Mixed Methods Approaches (3rd ed.). SAGE Publications India Pvt. Ltd.
Цитирование в стиле Чикаго (17-е изд.)Creswell, John W. Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. 3rd ed. New Delhi: SAGE Publications India Pvt. Ltd, 2011.
Цитирование MLA (9-е изд.)Creswell, John W. Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. 3rd ed. SAGE Publications India Pvt. Ltd, 2011.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.