Citazione Stile APA (7a Edizione)

Katigbak, T. (2018). Federalism is not the answer. IN Introspective [column]. Philippine Star.

Citazione stile Chigago Style (17a edizione)

Katigbak, Tony. "Federalism Is Not the Answer. IN Introspective [column]." Philippine Star 2018.

Citatione MLA (9a ed.)

Katigbak, Tony. "Federalism Is Not the Answer. IN Introspective [column]." Philippine Star, 2018.