Milbrath. Cosmology, Calendars, and Horizon-Based Astronomy in Ancient Mesoamerica. University Press of Colorado.
Chicago-referens (17:e uppl.)Milbrath. Cosmology, Calendars, and Horizon-Based Astronomy in Ancient Mesoamerica. University Press of Colorado.
MLA-referens (9:e uppl.)Milbrath. Cosmology, Calendars, and Horizon-Based Astronomy in Ancient Mesoamerica. University Press of Colorado.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.