Hoyningen-Huene, P., & Levine, A. (2004). Formal logic: A philosophical approach. University of Pittsburgh Press.
芝加哥风格引文Hoyningen-Huene, Paul, 与 Alex Levine. Formal Logic: A Philosophical Approach. Pittsburgh, Pennsylvania: University of Pittsburgh Press, 2004.
MLA引文Hoyningen-Huene, Paul, 与 Alex Levine. Formal Logic: A Philosophical Approach. University of Pittsburgh Press, 2004.
警告：这些引文格式不一定是100％准确.