Jazul, N. A. (2020). Two US firms offer COVID vaccines to PH: FDA cautions public against unregistered vaccines. Manila Bulletin.
Chicago-referens (17:e uppl.)Jazul, Noreen A. "Two US Firms Offer COVID Vaccines to PH: FDA Cautions Public Against Unregistered Vaccines." Manila Bulletin 2020.
MLA-referens (9:e uppl.)Jazul, Noreen A. "Two US Firms Offer COVID Vaccines to PH: FDA Cautions Public Against Unregistered Vaccines." Manila Bulletin, 2020.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.