APA (7th ed.) Zitazioa
Willey, G. R., & Smith, L. (1969). The ruins of Altar de Sacrificios, department of Peten, Guatemala: An introduction. The Peabody Museum.
Chicago Style (17th ed.) Zitazioa
Willey, Gordon R., eta Ledyard Smith. The Ruins of Altar De Sacrificios, Department of Peten, Guatemala: An Introduction. Cambridge, Massachusetts: The Peabody Museum, 1969.
MLA (9th ed.) Zitazioa
Willey, Gordon R., eta Ledyard Smith. The Ruins of Altar De Sacrificios, Department of Peten, Guatemala: An Introduction. The Peabody Museum, 1969.
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