Eugenio, H. V. (1997). Government eyes 40 percent self-sufficiency in energy. Manila Times.
Lua i Stíl Chicago (17ú heag.)Eugenio, Haidee V. "Government Eyes 40 Percent Self-sufficiency in Energy." Manila Times 1997.
Lua MLA (9ú heag.)Eugenio, Haidee V. "Government Eyes 40 Percent Self-sufficiency in Energy." Manila Times, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.