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Lua i Stíl Chicago (17ú heag.)Abrenica, Joy V. Ma. Technical Convergence and Competition: The Telecommunications Industry. Mandaluyong City: IDE-UPSE symposium-workshop, 1998.
Lua MLA (9ú heag.)Abrenica, Joy V. Ma. Technical Convergence and Competition: The Telecommunications Industry. IDE-UPSE symposium-workshop, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.