Published in
Happening & Fluxus. H. Sohm, (ed.), Kölnischer Kunstverein, Cologne, 1970
George Brecht: A Heterospective. J. Robinson & A. M. Fischer (eds.), Walter Koenig, 2005
Word Events. Perspectives on Verbal Notation. J. Lely & J. Sauders (eds.), Continuum 2012, p. 111.