Babbie, E. (2002). The basics of social research (2nd ed.). Wadsworth.
Chicago Style (17. basım) AtıfBabbie, Earl. The Basics of Social Research. 2nd ed. Australia: Wadsworth, 2002.
MLA (9th ed.) AtıfBabbie, Earl. The Basics of Social Research. 2nd ed. Wadsworth, 2002.
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