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शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMendoza, John Eric. "Talking, Singing Could Also Spread Covid-19." Manila Times 2020.
एमएलए (9वां संस्करण) प्रशस्ति पत्रMendoza, John Eric. "Talking, Singing Could Also Spread Covid-19." Manila Times, 2020.
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