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Silverman M., Ricci E. M., & Gunter M. J. ( 1990). "Strategies for increasing the rigor of qualitative methods in evaluation of health care programs". Evaluation Review, 14, 57-74
Qualitative vs. Quantitative Research
Patton, M. (1990). Qualitative evaluation and research methods. (2nd ed.). Los Angeles: Sage.
Quantitative Methodology
Patton, M. (1990), Qualitative evaluation and research methods, Newbury Park, Sage.
Choosing a Paradigm
Patton, M. (1990). Qualitative evaluation and research methods. Newbury Park: Sage.
Choosing a Paradigm
Patton, M. Q. (1990). Qualitative Evaluation and Research Methods (2nd ed.). Newbury Park, CA: Sage Publications, Inc.
E-learning Research Design
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