APA (7 वां संस्करण) प्रशस्ति पत्र

(2007). Software Freedom Day held at UP. Manila Times.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

"Software Freedom Day Held at UP." Manila Times 2007.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

"Software Freedom Day Held at UP." Manila Times, 2007.