Cofnodi Dyfyniadau
Dyfyniad APA
Curtis, H., & Barnes, N. S. (1994). Invitation to Biology (5th.ed.). Worth.
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Dyfyniad Arddull Chicago
Curtis, Helena, and N. Sue Barnes. Invitation to Biology. 5th.ed. New York: Worth, 1994.
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Dyfyniad MLA
Curtis, Helena, and N. Sue Barnes. Invitation to Biology. 5th.ed. Worth, 1994.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.