Sadongdong, M. A. (2021). Galvez explains delayed signing of multi-party deals on vaccines. Manila Bulletin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSadongdong, Martin A. "Galvez Explains Delayed Signing of Multi-party Deals on Vaccines." Manila Bulletin 2021.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSadongdong, Martin A. "Galvez Explains Delayed Signing of Multi-party Deals on Vaccines." Manila Bulletin, 2021.
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