Porpora, D. V. (1990). How holocausts happen: The United States in Central America. Temple University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPorpora, Douglas V. How Holocausts Happen: The United States in Central America. Philadelphia: Temple University Press, 1990.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPorpora, Douglas V. How Holocausts Happen: The United States in Central America. Temple University Press, 1990.
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