Gatdula, D. (2002). Napocor debt soars to P309B. Philippine Star.
Lua i Stíl Chicago (17ú heag.)Gatdula, Donabelle. "Napocor Debt Soars to P309B." Philippine Star 2002.
Lua MLA (9ú heag.)Gatdula, Donabelle. "Napocor Debt Soars to P309B." Philippine Star, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.