Cita APA (7a ed.)

Stevens, W. M. (1993). Cycles of time: Calendrical and astronomical reckonings in early science. International Universities Press.

Cita Chicago Style (17a ed.)

Stevens, Wesley M. Cycles of Time: Calendrical and Astronomical Reckonings in Early Science. Madison, Connectitut: International Universities Press, 1993.

Cita MLA (9a ed.)

Stevens, Wesley M. Cycles of Time: Calendrical and Astronomical Reckonings in Early Science. International Universities Press, 1993.