Gatpatan, M. V. (1998). The challenges of the party-list system. IN United Notions [column]. Manila Times.
Lua i Stíl Chicago (17ú heag.)Gatpatan, Marlene V. "The Challenges of the Party-list System. IN United Notions [column]." Manila Times 1998.
Lua MLA (9ú heag.)Gatpatan, Marlene V. "The Challenges of the Party-list System. IN United Notions [column]." Manila Times, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.