APA (7 वां संस्करण) प्रशस्ति पत्र

Casinas, J. A. (2021). COVID-19 reproduction rate in NCR drops to 1.91. Manila Bulletin.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Casinas, Jhon Aldrin. "COVID-19 Reproduction Rate in NCR Drops to 1.91." Manila Bulletin 2021.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Casinas, Jhon Aldrin. "COVID-19 Reproduction Rate in NCR Drops to 1.91." Manila Bulletin, 2021.