Antonio, A. (1999). Bulacan's high level of computerization. Philippine Panorama.
Lua i Stíl Chicago (17ú heag.)Antonio, Antonio. "Bulacan's High Level of Computerization." Philippine Panorama 1999.
Lua MLA (9ú heag.)Antonio, Antonio. "Bulacan's High Level of Computerization." Philippine Panorama, 1999.
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