Lua APA (7ú heag.)
Wellington, J. J., & Szczerbiński, M. (2007). Research methods for the social sciences. Continuum International Pub. Group.
Lua i Stíl Chicago (17ú heag.)
Wellington, J. J., agus Marcin Szczerbiński. Research Methods for the Social Sciences. London ; New York: Continuum International Pub. Group, 2007.
Lua MLA (9ú heag.)
Wellington, J. J., agus Marcin Szczerbiński. Research Methods for the Social Sciences. Continuum International Pub. Group, 2007.
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