Maragay, F. V. (2009). Drug companies defend 'voluntary compliance'. Manila Standard Today.
芝加哥风格引文Maragay, Fel V. "Drug Companies Defend 'Voluntary Compliance'." Manila Standard Today 2009.
MLA引文Maragay, Fel V. "Drug Companies Defend 'Voluntary Compliance'." Manila Standard Today, 2009.
警告：这些引文格式不一定是100％准确.