APA (7 वां संस्करण) प्रशस्ति पत्र
Sam O. Shem. (2024). Defeating COVID-19 in the African frontline. The Writers Pen Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Sam O. Shem. Defeating COVID-19 in the African Frontline. Kenya: The Writers Pen Publishers, 2024.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Sam O. Shem. Defeating COVID-19 in the African Frontline. The Writers Pen Publishers, 2024.
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