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              Huberman, A. M., & Miles, M. B. (2002). The qualitative researcher's companion. Thousand Oaks, CA: Sage.
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              Schofield, J.W. (1993) "Increasing the Generalizability of Qualitative Research," in M. Hammersley (ed.) Social Research: Philosophy, Politics, and Practice, pp. 200-25. London: SAGE.
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              Ward Shofield, J. (2002). Increasing the Generalizability of Qualitative Research. The Qualitative Researcher's Companion. London: Sage Publication.
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              Huberman, A. M., Miles, M. B. (2002). Increasing the Generalizability of Qualitative Research. The Qualitative Researcher's Companion. Thousand Oaks, CA: Sage Publication. Social Research: Philosophy, Politics, and Practice.
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