Can a Muslim wear a Jewish cap (kippah) instead of the regular Muslim cap (taqiyyah or kufi)? Can a Jew wear a Muslim cap instead of the regular kippah? - Quora
France's Jews advised to leave skullcaps off, for safety - Los Angeles Times
Yarmulkes vs. Kippahs: What's the Difference? – Klipped
Hebrew hi-res stock photography and images - Alamy
What Is A Kippah? | My Jewish Learning
What different styles of head coverings say about Israeli Jewish men | Pew Research Center
Jewish Signs and Symbols: Kippah - Jewish World - Haaretz.com