Cofnodi Dyfyniadau
Dyfyniad APA
Trac[ta]tus Lo[gic]us De u[nive[r[sa]libus.
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Dyfyniad Arddull Chicago
Trac[ta]tus Lo[gic]us De U[nive[r[sa]libus.
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Dyfyniad MLA
Trac[ta]tus Lo[gic]us De U[nive[r[sa]libus.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.