Casanova, S. (2002). Cellular service providers nix proposed phone card tax scheme. Manila Times.
Chicago (17e ed.) BronvermeldingCasanova, Sheryll. "Cellular Service Providers Nix Proposed Phone Card Tax Scheme." Manila Times 2002.
MLA (9e ed.) BronvermeldingCasanova, Sheryll. "Cellular Service Providers Nix Proposed Phone Card Tax Scheme." Manila Times, 2002.
Let op: Deze citaties zijn niet altijd 100% accuraat.