Dyfyniad APA

National Environmental Protection Council (Philippines). (1977). Primer on Philippine environmental decrees. Republic of the Philippines, Dept. of Natural Resources, National Environmental Protection Council.

Dyfyniad Arddull Chicago

National Environmental Protection Council (Philippines). Primer on Philippine Environmental Decrees. [Manila]: Republic of the Philippines, Dept. of Natural Resources, National Environmental Protection Council, 1977.

Dyfyniad MLA

National Environmental Protection Council (Philippines). Primer on Philippine Environmental Decrees. Republic of the Philippines, Dept. of Natural Resources, National Environmental Protection Council, 1977.

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