Cruz, I. A. (2005). The power of legislative investigation. IN Separate opinion [column]. Philippine Daily Inquirer.
Chicago-referens (17:e uppl.)Cruz, Isagani A. "The Power of Legislative Investigation. IN Separate Opinion [column]." Philippine Daily Inquirer 2005.
MLA-referens (9:e uppl.)Cruz, Isagani A. "The Power of Legislative Investigation. IN Separate Opinion [column]." Philippine Daily Inquirer, 2005.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.