Lopez, E. H. (2001). Increasing developmet by local firms of leading electronics billing sol'n area. Manila Bulletin.
Čikaški stil citiranja (17. izdanje)Lopez, Edu H. "Increasing Developmet by Local Firms of Leading Electronics Billing Sol'n Area." Manila Bulletin 2001.
MLA način citiranja (9. izdanje)Lopez, Edu H. "Increasing Developmet by Local Firms of Leading Electronics Billing Sol'n Area." Manila Bulletin, 2001.
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