APA (7 वां संस्करण) प्रशस्ति पत्र

(1997). Comet Hale-Bopp. IN Editorial [column]: Spectacular phenomenon of the year. Manila Bulletin.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

"Comet Hale-Bopp. IN Editorial [column]: Spectacular Phenomenon of the Year." Manila Bulletin 1997.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

"Comet Hale-Bopp. IN Editorial [column]: Spectacular Phenomenon of the Year." Manila Bulletin, 1997.