Sangguniang Panlalawigan Official Website
Provincial Government of Bulacan Website
Bulacan Trivia / Information
The Official Government Portal of the Republic of the Philippines
Government Links
Philippine National Institutions
1987 Philippine Constitution – English Versionhttp://www.tanggol.org/environmental_laws/const.htmlhttp://en.wikisource.org/wiki/Constitution_of_the_Philippines_(1987)
1987 Philippine Constitution – Filipino Versionhttp://wikisource.org/wiki/Ang_1987_Saligang_Batas_ng_Pilipinashttp://www.seasite.niu.edu/Tagalog/ang_1987_konstitusyon_ng_republi.htm