El Cenote Sagrado, Chichén Itzá, Yucatán [online]. Ciudad de México: Arqueología Mexicana, [cit. 2017-10-26]. Dostupné online.
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AISSEN, Judith L.; ENGLAND, Nora C.; ZAVALA MALDONADO, Roberto, eds. The Mayan Languages. New York : Routledge/Taylor & Francis Group, [2017]. Dostupné online.ISBN 978-0415-73802-6. S. 182.
EDMONSON, Munro S., ed. The Ancient Future of the Itza : The Book of Chilam Balam of Tizimi. [eBook] Austin : University of Texas Press, 1982, 2011. Dostupné online.ISBN 978-0-292-72106-7. S. 5.