Babbie, E. R. (2013). The practice of social research (13th ed.). Wadsworth Cengage Learning.
Chicago Style (17. basım) AtıfBabbie, Earl R. The Practice of Social Research. 13th ed. Belmont, Calif.: Wadsworth Cengage Learning, 2013.
MLA (9th ed.) AtıfBabbie, Earl R. The Practice of Social Research. 13th ed. Wadsworth Cengage Learning, 2013.
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