Casanova, S. (2002). Cellular service providers nix proposed phone card tax scheme. Manila Times.
Chicago Style aipamenaCasanova, Sheryll. "Cellular Service Providers Nix Proposed Phone Card Tax Scheme." Manila Times 2002.
MLA aipamenaCasanova, Sheryll. "Cellular Service Providers Nix Proposed Phone Card Tax Scheme." Manila Times, 2002.
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