Babbie, E. R. (2004). The practice of social research (10th ed.). Thomson/Wadsworth.
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Dyfyniad Arddull Chicago
Babbie, Earl R. The Practice of Social Research. 10th ed. Belmont, CA: Thomson/Wadsworth, 2004.
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Dyfyniad MLA
Babbie, Earl R. The Practice of Social Research. 10th ed. Thomson/Wadsworth, 2004.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.