APA (7th ed.) Citation

Richards, E. G. (1998). Mapping time: The calendar and its history. Oxford Univ. Press.

Chicago Style (17th ed.) Citation

Richards, Edward Graham. Mapping Time: The Calendar and Its History. Oxford [u.a.]: Oxford Univ. Press, 1998.

MLA (9th ed.) Citation

Richards, Edward Graham. Mapping Time: The Calendar and Its History. Oxford Univ. Press, 1998.