Casanova, S. (2002). Cellular service providers nix proposed phone card tax scheme. Manila Times.
Citación estilo ChicagoCasanova, Sheryll. "Cellular Service Providers Nix Proposed Phone Card Tax Scheme." Manila Times 2002.
Cita MLACasanova, Sheryll. "Cellular Service Providers Nix Proposed Phone Card Tax Scheme." Manila Times, 2002.
Warning: These citations may not always be 100% accurate.