Gatpatan, M. V. (1998). The challenges of the party-list system. IN United Notions [column]. Manila Times.
Chicago-referens (17:e uppl.)Gatpatan, Marlene V. "The Challenges of the Party-list System. IN United Notions [column]." Manila Times 1998.
MLA-referens (9:e uppl.)Gatpatan, Marlene V. "The Challenges of the Party-list System. IN United Notions [column]." Manila Times, 1998.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.