Sadongdong, M. A. (2021). PH hits milestone with 4M vaccine doses administered nationwide. Manila Bulletin.
芝加哥风格引文Sadongdong, Martin A. "PH Hits Milestone with 4M Vaccine Doses Administered Nationwide." Manila Bulletin 2021.
MLA引文Sadongdong, Martin A. "PH Hits Milestone with 4M Vaccine Doses Administered Nationwide." Manila Bulletin, 2021.
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