Creswell, J. W. (2012). Educational Research: Planning, conducting, and evaluating quantitative and qualitative research (4th ed.). Pearson.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিCreswell, John W. Educational Research: Planning, Conducting, and Evaluating Quantitative and Qualitative Research. 4th ed. Noida: Pearson, 2012.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিCreswell, John W. Educational Research: Planning, Conducting, and Evaluating Quantitative and Qualitative Research. 4th ed. Pearson, 2012.
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