Blancaflor, M. (2020). Duterte vows EO to set drug price cap. IN Cover [column]. Manila Standard.
Chicago-viite (17. p.)Blancaflor, MJ. "Duterte Vows EO to Set Drug Price Cap. IN Cover [column]." Manila Standard 2020.
MLA-viite (9. p.)Blancaflor, MJ. "Duterte Vows EO to Set Drug Price Cap. IN Cover [column]." Manila Standard, 2020.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.