Dyfyniad APA

Unlawful activities (prevention) Act, 1967.

Dyfyniad Arddull Chicago

Unlawful Activities (prevention) Act, 1967.

Dyfyniad MLA

Unlawful Activities (prevention) Act, 1967.

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