Babbie, E. R. (1986). The practice of social research (4th ed.). Wadsworth Pub. Co..
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Citação norma Chicago
Babbie, Earl R. The Practice of Social Research. 4th ed. Belmont, Calif.: Wadsworth Pub. Co., 1986.
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Citação norma MLA
Babbie, Earl R. The Practice of Social Research. 4th ed. Wadsworth Pub. Co., 1986.
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Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.