APA (7th ed.) Zitazioa
ebrary, Inc, & Sheets, P. D. (2002). Before the volcano erupted: The ancient Cerèn village in Central America. University of Texas Press.
Chicago Style (17th ed.) Zitazioa
ebrary, Inc, eta Payson D. Sheets. Before the Volcano Erupted: The Ancient Cerèn Village in Central America. Austin: University of Texas Press, 2002.
MLA (9th ed.) Zitazioa
ebrary, Inc, eta Payson D. Sheets. Before the Volcano Erupted: The Ancient Cerèn Village in Central America. University of Texas Press, 2002.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.