Cita APA (7a ed.)

Cruz, I. A. (2003). Changing the charter. IN Separate opinion [column]. Philippine Daily Inquirer.

Cita Chicago Style (17a ed.)

Cruz, Isagani A. "Changing the Charter. IN Separate Opinion [column]." Philippine Daily Inquirer 2003.

Cita MLA (9a ed.)

Cruz, Isagani A. "Changing the Charter. IN Separate Opinion [column]." Philippine Daily Inquirer, 2003.