(1998). National Power Corporation 62nd anniversary. Philippine Daily Inquirer.
Dyfyniad Arddull Chicago"National Power Corporation 62nd Anniversary." Philippine Daily Inquirer 1998.
Dyfyniad MLA"National Power Corporation 62nd Anniversary." Philippine Daily Inquirer, 1998.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.