Casanova, S. (2002). Cellular service providers nix proposed phone card tax scheme. Manila Times.
芝加哥风格引文Casanova, Sheryll. "Cellular Service Providers Nix Proposed Phone Card Tax Scheme." Manila Times 2002.
MLA引文Casanova, Sheryll. "Cellular Service Providers Nix Proposed Phone Card Tax Scheme." Manila Times, 2002.
警告：这些引文格式不一定是100％准确.