Obanil, R. S. (2020). COVID-19 survivors asked to donate blood for rare antibodies. Manila Bulletin.
Chicago Style (17. basım) AtıfObanil, Rizal S. "COVID-19 Survivors Asked to Donate Blood for Rare Antibodies." Manila Bulletin 2020.
MLA (9th ed.) AtıfObanil, Rizal S. "COVID-19 Survivors Asked to Donate Blood for Rare Antibodies." Manila Bulletin, 2020.
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