Behan, Tom, Dario Fo: Revolutionary Theatre, Pluto Press, 2000, p. 67.

Cairns, Christopher, “Dario Fo and the Commedia Dell'Arte,” in Studies in the Commedia Dell'Arte, edited by David J. George and Christopher J. Gossip, University of Wales Press, 1993, p. 1.

Farrell, Joseph, “Dario Fo: Zanni and Giullare,” in The Commedia Dell'Arte: From the Renaissance to Dario Fo, edited by Christopher Cairns, Edwin Mellon Press, 1989, pp. 1-2.

Fo, Dario, Accidental Death of an Anarchist, translated by Ed Emery, in Dario Fo: Plays 1, Methuen, 1992, pp. 127, 136, 137, 152, 176, 190, 191, 193, 198, 200, 202.