Bloomberg, Reuters, & Agence France-Presse. (2020). COVUD-19 vaccines in human trials stage. Manila Bulletin.
Cita Chicago (17th ed.)Bloomberg, Reuters, i Agence France-Presse. "COVUD-19 Vaccines in Human Trials Stage." Manila Bulletin 2020.
Cita MLA (9th ed.)Bloomberg, et al. "COVUD-19 Vaccines in Human Trials Stage." Manila Bulletin, 2020.
Atenció: Aquestes cites poden no estar 100% correctes.