APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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

Let op: Deze citaties zijn niet altijd 100% accuraat.