Casanova, S. (2002). Prepaid cards boost internet industry growth. Manila Times.
Čikaški stil citiranja (17. izdanje)Casanova, Sheryll. "Prepaid Cards Boost Internet Industry Growth." Manila Times 2002.
MLA način citiranja (9. izdanje)Casanova, Sheryll. "Prepaid Cards Boost Internet Industry Growth." Manila Times, 2002.
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