Abaya, E. F. (1996). Coding telephone number to avoid “wrong numbers”. Philippine Engineering Journal.
Style de citation Chicago (17e éd.)Abaya, Efren F. "Coding Telephone Number to Avoid “wrong Numbers”." Philippine Engineering Journal 1996.
Style de citation MLA (9e éd.)Abaya, Efren F. "Coding Telephone Number to Avoid “wrong Numbers”." Philippine Engineering Journal, 1996.
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