Rufo, A. (1992). Natural birth control backed / Aries Rufo. Manila Times.
芝加哥风格引文Rufo, Aries. "Natural Birth Control Backed / Aries Rufo." Manila Times 1992.
MLA引文Rufo, Aries. "Natural Birth Control Backed / Aries Rufo." Manila Times, 1992.
警告：这些引文格式不一定是100％准确.