Weeks, J. M., Sachse, F., & Prager, C. M. (2009). Maya daykeeping: Three calendars from highland Guatemala. University Press of Colorado.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWeeks, John M., Frauke Sachse, और Christian M. Prager. Maya Daykeeping: Three Calendars from Highland Guatemala. Boulder, Colo.: University Press of Colorado, 2009.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWeeks, John M., et al. Maya Daykeeping: Three Calendars from Highland Guatemala. University Press of Colorado, 2009.
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