Weeks, J. M., Sachse, F., & Prager, C. M. (2009). Maya daykeeping: Three calendars from highland Guatemala. University Press of Colorado.
Lua i Stíl Chicago (17ú heag.)Weeks, John M., Frauke Sachse, agus Christian M. Prager. Maya Daykeeping: Three Calendars from Highland Guatemala. Boulder, Colo.: University Press of Colorado, 2009.
Lua MLA (9ú heag.)Weeks, John M., et al. Maya Daykeeping: Three Calendars from Highland Guatemala. University Press of Colorado, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.