Creswell, J. W. (2014). Research design: Qualitative, quantitative, and mixed methods approaches. SAGE Publications.
استشهاد بنمط شيكاغوCreswell, John W. Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. SAGE Publications, 2014.
MLA استشهادCreswell, John W. Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. SAGE Publications, 2014.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.