Article Gimmel, Millie (2008)
Reading Medicine in the Codex de la Cruz Badiano. Journal of the History of Ideas (p. 169). (/p/isis/citation/CBB001030605/) unapi

Article Aldana, Gerardo (2007/2008)
Glyph G and the Yohualteuctin: Recovering the Mesoamerican Practice of Time Keeping and Nightly Astrology. Archaeoastronomy: The Journal of Astronomy in Culture (p. 59). (/p/isis/citation/CBB001252029/) unapi

Article Reeves, Henry M. (2006)
Sahagún's “Florentine Codex,” A Little Known Aztecan Natural History of the Valley of Mexico. Archives of Natural History (p. 302). (/p/isis/citation/CBB000772491/) unapi

Book Hassig, Ross (2001)
Time, History and Belief in Aztec and Colonial Mexico. (/p/isis/citation/CBB000600038/) unapi

Book Carrasco, David (2001)
Quetzalcoatl and the Irony of Empire: Myths and Prophecies in the Aztec Tradition. (/p/isis/citation/CBB000102015/) unapi

Book Cruz, Martín de la (2000)
An Aztec Herbal: The Classic Codex of 1552. (/p/isis/citation/CBB000110156/) unapi