Ronquillo, B. (1999). Technology focus for millenium up at PECC meet. Manila Bulletin.
Lua i Stíl Chicago (17ú heag.)Ronquillo, Bernardo. "Technology Focus for Millenium Up at PECC Meet." Manila Bulletin 1999.
Lua MLA (9ú heag.)Ronquillo, Bernardo. "Technology Focus for Millenium Up at PECC Meet." Manila Bulletin, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.