APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

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

MLA-referens (9:e uppl.)

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