Villanueva, M. A. (2000). Estrada extends terms of COP, AFTI. Philippine Star.
Chicago Style aipamenaVillanueva, Marichu A. "Estrada Extends Terms of COP, AFTI." Philippine Star 2000.
MLA aipamenaVillanueva, Marichu A. "Estrada Extends Terms of COP, AFTI." Philippine Star, 2000.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.