National Power Corporation. Public Affairs Department. (1997). Powering Philippine progress through the years: A story of the National Power Corporation's past, present and future in oil paintings. Public Affairs Dept., National Power Corporation.
Citazione stile Chigago Style (17a edizione)National Power Corporation. Public Affairs Department. Powering Philippine Progress Through the Years: A Story of the National Power Corporation's Past, Present and Future in Oil Paintings. Quezon City: Public Affairs Dept., National Power Corporation, 1997.
Citatione MLA (9a ed.)National Power Corporation. Public Affairs Department. Powering Philippine Progress Through the Years: A Story of the National Power Corporation's Past, Present and Future in Oil Paintings. Public Affairs Dept., National Power Corporation, 1997.