Sage Publications, inc, & Jupp, V. (2006). The Sage dictionary of social research methods. SAGE Publications.
Lua i Stíl Chicago (17ú heag.)Sage Publications, inc, agus Victor Jupp. The Sage Dictionary of Social Research Methods. London ; Thousand Oaks, Calif.: SAGE Publications, 2006.
Lua MLA (8ú heag.)Sage Publications, inc, agus Victor Jupp. The Sage Dictionary of Social Research Methods. SAGE Publications, 2006.
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