Cofnodi Dyfyniadau
Dyfyniad APA
Portugal Biblioteca Nacional. (2004). I Guerra Mundial. Biblioteca Nacional.
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Dyfyniad Arddull Chicago
Portugal Biblioteca Nacional. I Guerra Mundial. Biblioteca Nacional, 2004.
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Dyfyniad MLA
Portugal Biblioteca Nacional. I Guerra Mundial. Biblioteca Nacional, 2004.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.