APA način citiranja (7. izdanje)

Abaya, E. F. (1996). Coding telephone number to avoid “wrong numbers”. Philippine Engineering Journal.

Čikaški stil citiranja (17. izdanje)

Abaya, Efren F. "Coding Telephone Number to Avoid “wrong Numbers”." Philippine Engineering Journal 1996.

MLA način citiranja (9. izdanje)

Abaya, Efren F. "Coding Telephone Number to Avoid “wrong Numbers”." Philippine Engineering Journal, 1996.