Dyfyniad APA

Glossa | Open Library of Humanities. Cambridge University Press.

Dyfyniad Arddull Chicago

Glossa | Open Library of Humanities. Cambridge University Press.

Dyfyniad MLA

Glossa | Open Library of Humanities. Cambridge University Press.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.