Echeminada, P. (1997). Valdez on Charter change: Joke only. Philippine Star.
Lua i Stíl Chicago (17ú heag.)Echeminada, Perseus. "Valdez on Charter Change: Joke Only." Philippine Star 1997.
Lua MLA (9ú heag.)Echeminada, Perseus. "Valdez on Charter Change: Joke Only." Philippine Star, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.