Schortman, E. M. (1993). Archaeological investigations in the lower Motagua Valley, Izabal, Guatemala: A study in monumental site function and interaction. Univ. Museum, Univ. of Pennsylvania.
Chicago-Zitierstil (17. Ausg.)Schortman, Edward M. Archaeological Investigations in the Lower Motagua Valley, Izabal, Guatemala: A Study in Monumental Site Function and Interaction. Philadelphia: Univ. Museum, Univ. of Pennsylvania, 1993.
MLA-Zitierstil (9. Ausg.)Schortman, Edward M. Archaeological Investigations in the Lower Motagua Valley, Izabal, Guatemala: A Study in Monumental Site Function and Interaction. Univ. Museum, Univ. of Pennsylvania, 1993.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.