Dr. Richard H. Schwartz wrote a book titled Judaism and Vegetarianism. The designer of the cover put carrots in six frames, which are being added to one another to form a Star of David. In this concept carrots equal Vegetarianism, and the Star of David equals Judaism. I don't know about you but it made me smile a slight smile…
It seems that this sort of equation makes the life of book cover designers easier. Here are a few more examples:
Christianity, Judaism and Islam -a Missiological Encounter by: Glory E. Dharmaraj and Jacob S. Dharmaraj. On the cover are the Jewish Star of David, the Christian Cross and the Muslim Crescent.
Very similar design is on the cover of a 4 CD set titled Islam, Judaism and Christianity by Dr. Greg L. Bahnsen.
On the cover of Judaism and Anthroposophy (Edited by Fred Paddock and Mado Spiegler, ISBN: 0880105100) there's a stone relief of a Star of David and a pentagram.
…On the cover of Judaism and Story: The Evidence of The Fathers According to Rabbi Nathan. 1992.
The same goes for the equation Zionism equals …
The letter O in the shape of a Star of David on the cover of Zionism and the State of Israel; A Moral Inquiry by Michael Prior
On the cover of Messianism Zionism, and Jewish Religious Radicalism by Aviezer Ravitzky there's a large half-blue-half-white Star of David.