Brecht, Bertolt, Brecht on Theatre: The Development of an Aesthetic, edited and translated by John Willett, Eyre Methuen, 1964.

Willett's compilation of Brecht's writings on theater is a thorough introduction to the dramatist's evolving concerns in his influential career as a writer and director of political theater.

Cardullo, Bert, and Robert Knopf, eds., Theater of the Avant-Garde, 1890-1950: A Critical Anthology, Yale University Press, 2001.

This anthology assembles the statements, manifestoes, and opinions of major drama theorists and practitioners, some of whom, like Bertolt Brecht, influenced Fo.

Hirst, David L., Dario Fo and Franca Rame, St. Martin's Press, 1989.

Hirst's book is a comprehensive general introduction to the works and collaboration of Dario Fo and Franca Rame.

Mitchell, Tony, Dario Fo: People's Court Jester, Methuen, 1986.

A well-known Fo scholar, Mitchell provides insight into how Fo's political convictions inform his works. Photographs that capture the farcical and daring nature...