APA (7th ed.) Zitazioa

Porpora, D. V. (1990). How holocausts happen: The United States in Central America. Temple University Press.

Chicago Style (17th ed.) Zitazioa

Porpora, Douglas V. How Holocausts Happen: The United States in Central America. Philadelphia: Temple University Press, 1990.

MLA (9th ed.) Zitazioa

Porpora, Douglas V. How Holocausts Happen: The United States in Central America. Temple University Press, 1990.