Dyfyniad APA

Bulletin of the Section of Taxation, American Bar Association. American Bar Association.

Dyfyniad Arddull Chicago

Bulletin of the Section of Taxation, American Bar Association. American Bar Association.

Dyfyniad MLA

Bulletin of the Section of Taxation, American Bar Association. American Bar Association.

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