Statement

The Jewish calendar combines lunar and solar cycles and adds a month in seven years of each nineteen-year cycle.

References

1. p. 246

   supports · main text · ch. 9

   Efron, Lehmann and Weitzman. The Jews: A History. 3rd edition. New York and Abingdon: Routledge, 2019.

   Verification anchor recorded · checked against the page text