Cofnodi Dyfyniadau
Dyfyniad APA
Porto Editora. (2017). Portugal. Porto Editora.
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Dyfyniad Arddull Chicago
Porto Editora. Portugal. Porto Editora, 2017.
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Dyfyniad MLA
Porto Editora. Portugal. Porto Editora, 2017.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.