Creswell, J. W. (2014). Research design: Qualitative, quantitative, and mixed methods approaches. SAGE Publications.
Chicago-стиль цитированияCreswell, John W. Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. SAGE Publications, 2014.
MLA-цитированиеCreswell, John W. Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. SAGE Publications, 2014.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.