The headscarf controversy: secularism and freedom of religion
Published in 2012. Looks at the situation in Europe (with separate chapters on France and Germany) as well as Turkey and the U.S.
Visibly Muslim: fashion, politics, faith
Focus is mainly on Britain but addresses issues applicable elsewhere. The many illustrations make it especially useful. Also available in online version.
The Muslim veil in North America: issues and debates
Islam and the veil: theoretical and regional contexts
Also available in online format.
A quiet revolution: the veil's resurgence, from the Middle East to America
Hijab & the republic: uncovering the French headscarf debate
Another book focusing on this topic is : "Why the French Don't Like Headscarves."