Crabtree, B. F. M. (1999). Doing qualitative research (2nd-ed.). SAGE Publications, Inc.
Chicago-viite (17. p.)Crabtree, Benjamin F. Miller. Doing Qualitative Research. 2nd-ed. London: SAGE Publications, Inc, 1999.
MLA-viite (8. p.)Crabtree, Benjamin F. Miller. Doing Qualitative Research. 2nd-ed. SAGE Publications, Inc, 1999.
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