Valente, . C. . S. (2020). Duterte: PH won’t pay ‘reservation fee’ for Covid-19 vaccines. Manila Times.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रValente, Catherine S. "Duterte: PH Won’t Pay ‘reservation Fee’ for Covid-19 Vaccines." Manila Times 2020.
एमएलए (9वां संस्करण) प्रशस्ति पत्रValente, Catherine S. "Duterte: PH Won’t Pay ‘reservation Fee’ for Covid-19 Vaccines." Manila Times, 2020.
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