Cofnodi Dyfyniadau
Dyfyniad APA
Portugal Rainha. [Alvará de Dona Maria I, rainha de Portugal, sobre a neutralidade de Portugal].
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Dyfyniad Arddull Chicago
Portugal Rainha. [Alvará De Dona Maria I, Rainha De Portugal, Sobre a Neutralidade De Portugal].
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Dyfyniad MLA
Portugal Rainha. [Alvará De Dona Maria I, Rainha De Portugal, Sobre a Neutralidade De Portugal].
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.