The Ideational Approach to Populism: Concept, Theory, and Analysis (Routledge Studies in Extremism Democracy)

the Power of Populism: Geert Wilders and Party for Freedom in Netherlands...

On Extremism and Democracy in Europe (Routledge Studies Democracy)

The Far Right in America (Routledge Studies Extremism and Democracy)

Militant Democracy: The Limits of Democratic Tolerance (Routledge Studies in Extremism and Democracy)