Philippine News Agency & Mabasa, R. C. (2020). Russia ready to supply, invest on 'vaccine production' in PH. Manila Bulletin.
Chicagoスタイル(17版)引用形式Philippine News Agency , Roy C. Mabasa. "Russia Ready to Supply, Invest on 'Vaccine Production' in PH." Manila Bulletin 2020.
MLA(9版)引用形式Philippine News Agency , Roy C. Mabasa. "Russia Ready to Supply, Invest on 'Vaccine Production' in PH." Manila Bulletin, 2020.
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