Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.

APA Citation Edition Citation

Sheets, P. D. (1983). Archeology and volcanism in Central America: The Zapotitán Valley of El Salvador. University of Texas Press.

Chicago Citation Edition Citation

Sheets, Payson D. Archeology and Volcanism in Central America: The Zapotitán Valley of El Salvador. Austin-TX: University of Texas Press, 1983.

MLA Citation Edition Citation

Sheets, Payson D. Archeology and Volcanism in Central America: The Zapotitán Valley of El Salvador. University of Texas Press, 1983.