Cofnodi Dyfyniadau
Dyfyniad APA
Lipsey, R. G., & Courant, P. N. (1995). Economics (11th ed.). HarperCollins.
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Dyfyniad Arddull Chicago
Lipsey, Richard G., and Paul N. Courant. Economics. 11th ed. New York: HarperCollins, 1995.
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Dyfyniad MLA
Lipsey, Richard G., and Paul N. Courant. Economics. 11th ed. HarperCollins, 1995.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.