APA-čujuhus (7. p.)
Morgan, D. L. (1997). Focus groups as qualitative research / David L. Morgan (2nd ed.). Sage Publications.
Chicago-čujuhus (17. p.)
Morgan, David L. Focus Groups as Qualitative Research / David L. Morgan. 2nd ed. Thousand Oaks, Calif.: Sage Publications, 1997.
MLA-čujuhus (9. p.)
Morgan, David L. Focus Groups as Qualitative Research / David L. Morgan. 2nd ed. Sage Publications, 1997.
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