Guerrero, G. I. (1992). Legislation on suffrage and electoral reform in the eight congress. Congressional Research and Training Service (CRTS).
Chicago-referens (17:e uppl.)Guerrero, Guillermo I. Legislation on Suffrage and Electoral Reform in the Eight Congress. Quezon City: Congressional Research and Training Service (CRTS), 1992.
MLA-referens (9:e uppl.)Guerrero, Guillermo I. Legislation on Suffrage and Electoral Reform in the Eight Congress. Congressional Research and Training Service (CRTS), 1992.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.