Makabenta, Y. (2020). Vaccine purgatory: Why nations must plan vaccination of their people. Manila Times.
Chicago-referens (17:e uppl.)Makabenta, Yen. "Vaccine Purgatory: Why Nations Must Plan Vaccination of Their People." Manila Times 2020.
MLA-referens (9:e uppl.)Makabenta, Yen. "Vaccine Purgatory: Why Nations Must Plan Vaccination of Their People." Manila Times, 2020.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.