Dyfyniad APA

Policy digest. Office of the Senate Policy Studies Group.

Dyfyniad Arddull Chicago

Policy Digest. Pasay City: Office of the Senate Policy Studies Group.

Dyfyniad MLA

Policy Digest. Office of the Senate Policy Studies Group.

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