Babbie, E. (2014). The Basics of social research (6th ed.). Wadsworth.
Chicago Style (17. basım) AtıfBabbie, Earl. The Basics of Social Research. 6th ed. Australia: Wadsworth, 2014.
MLA (9th ed.) AtıfBabbie, Earl. The Basics of Social Research. 6th ed. Wadsworth, 2014.
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