Dyfyniad APA

Costello. The Plural of Us. Princeton University Press.

Dyfyniad Arddull Chicago

Costello. The Plural of Us. Princeton University Press.

Dyfyniad MLA

Costello. The Plural of Us. Princeton University Press.

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