APA (7th ed.) Citation

Britton, J. A. (2007). Calendars, Intercalatiosn and Year-Lengths in Mesopotamian Astronomy.

Chicago Style (17th ed.) Citation

Britton, John A. Calendars, Intercalatiosn and Year-Lengths in Mesopotamian Astronomy. 2007.

MLA (9th ed.) Citation

Britton, John A. Calendars, Intercalatiosn and Year-Lengths in Mesopotamian Astronomy. 2007.

Warning: These citations may not always be 100% accurate.