APA (7 वां संस्करण) प्रशस्ति पत्र

Abrenica, J. V. M. (1998). Technical convergence and competition: The telecommunications industry. IDE-UPSE symposium-workshop.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Abrenica, Joy V. Ma. Technical Convergence and Competition: The Telecommunications Industry. Mandaluyong City: IDE-UPSE symposium-workshop, 1998.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Abrenica, Joy V. Ma. Technical Convergence and Competition: The Telecommunications Industry. IDE-UPSE symposium-workshop, 1998.