Philippines. Ministry of Information. (1981). Primer on the constitutional amendments. Ministry of Information.
Dyfyniad Arddull ChicagoPhilippines. Ministry of Information. Primer on the Constitutional Amendments. Manila: Ministry of Information, 1981.
Dyfyniad MLAPhilippines. Ministry of Information. Primer on the Constitutional Amendments. Ministry of Information, 1981.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.