Porpora, D. V. (1990). How holocausts happen: The United States in Central America. Temple University Press.
芝加哥风格引文Porpora, Douglas V. How Holocausts Happen: The United States in Central America. Philadelphia: Temple University Press, 1990.
MLA引文Porpora, Douglas V. How Holocausts Happen: The United States in Central America. Temple University Press, 1990.
警告：这些引文格式不一定是100％准确.