1. Barthel, Thomas 1968 El complejo emblema.Estudios de cultura maya 7:159–193.
2. Houston, Stephen D. 1986 Problematic Emblem Glyphs: Examples from Altar de Sacrificios, ElChorro, Río Azul, and Xultun.Research Reports on Ancient Maya Writing 3.Center for Maya Research,Washington DC.
3. Stuart, David S. 2004 The Beginnings of the Copan Dynasty: A Review of the Hieroglyphicand Historical Evidence. InUnderstanding Early Classic Copan, edited by Ellen E. Bell , Marcello A. Canuto , and Robert J. Sharer , pp.215–247.Museum of Archaeology and Anthropology.University of Pennsylvania,Philadelphia.
4. Graham, Ian 1992 Uxmal. Corpus of Maya Hieroglyphic Inscriptions,4(2).Peabody Museum of Archaeology and Ethnology,Harvard University, Cambridge, MA.
5. Gendrop, Paul 1983 Los estilos Río Bec, Chenes y Puuc en la arquitecturamaya.Universidad Autónoma Nacional de México,Mexico City.