Ulin, P. R. (2002). Qualitative methods: A field guide for applied research in sexual and reproductive health. Family Health International.
Lua i Stíl Chicago (17ú heag.)Ulin, Priscilla R. Qualitative Methods: A Field Guide for Applied Research in Sexual and Reproductive Health. Research Triangle Park, NC: Family Health International, 2002.
Lua MLA (9ú heag.)Ulin, Priscilla R. Qualitative Methods: A Field Guide for Applied Research in Sexual and Reproductive Health. Family Health International, 2002.
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