Casanova, S. (2002). Prepaid cards boost internet industry growth. Manila Times.
芝加哥风格引文Casanova, Sheryll. "Prepaid Cards Boost Internet Industry Growth." Manila Times 2002.
MLA引文Casanova, Sheryll. "Prepaid Cards Boost Internet Industry Growth." Manila Times, 2002.
警告：这些引文格式不一定是100％准确.