Cofnodi Dyfyniadau
Dyfyniad APA
Vasconcelos Demétrio de & Castro Francisco Vieira de. O Futuro. José Martins dos Santos.
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Dyfyniad Arddull Chicago
Vasconcelos Demétrio de and Castro Francisco Vieira de. O Futuro. José Martins dos Santos.
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Dyfyniad MLA
Vasconcelos Demétrio de and Castro Francisco Vieira de. O Futuro. José Martins dos Santos.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.