Kuhn, T., Leeder, K., & Constantine, D. (2002). Empedocles' shoe: Essays on Brecht's poetry / ed. by Tom Kuhn and Karen Leeder. [With a forew. by David Constantine]. Methuen.

Kuhn, Tom, Karen Leeder, and David Constantine. Empedocles' Shoe: Essays on Brecht's Poetry / Ed. by Tom Kuhn and Karen Leeder. [With a Forew. by David Constantine]. London: Methuen, 2002.

Kuhn, Tom, et al. Empedocles' Shoe: Essays on Brecht's Poetry / Ed. by Tom Kuhn and Karen Leeder. [With a Forew. by David Constantine]. Methuen, 2002.