Porpora, D. V. (1990). How holocausts happen: The United States in Central America. Temple University Press.
Lua i Stíl Chicago (17ú heag.)Porpora, Douglas V. How Holocausts Happen: The United States in Central America. Philadelphia: Temple University Press, 1990.
Lua MLA (9ú heag.)Porpora, Douglas V. How Holocausts Happen: The United States in Central America. Temple University Press, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.