Schutt, R. K. (1996). Investigating the social world: The process and practice of research. Pine Forge Press.
Lua i Stíl Chicago (17ú heag.)Schutt, Russell K. Investigating the Social World: The Process and Practice of Research. Thousands Oaks, Calif.: Pine Forge Press, 1996.
Lua MLA (8ú heag.)Schutt, Russell K. Investigating the Social World: The Process and Practice of Research. Pine Forge Press, 1996.
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