Sison, C. V. (1999). Comparative study of the 1987, 1973 and 1935 Philippine constitutions: A comparative table. University of the Philippines Law Center.
Chicago-referens (17:e uppl.)Sison, Carmelo V. Comparative Study of the 1987, 1973 and 1935 Philippine Constitutions: A Comparative Table. Quezon City: University of the Philippines Law Center, 1999.
MLA-referens (9:e uppl.)Sison, Carmelo V. Comparative Study of the 1987, 1973 and 1935 Philippine Constitutions: A Comparative Table. University of the Philippines Law Center, 1999.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.