| Powell, K. (2006). The Cambridge Companion to Victorian and Edwardian Theatre. Cambridge: Cambridge University Press. |
| Levenson, M. H. (2011). The Cambridge Companion to Modernism. Cambridge: Cambridge University Press. |
| Sarup, M. (2006). An Introductory Guide to Post-structuralism and Postmodernism. London: Harvester Wheatsheaf. |
| Dillon, Janette (2006). The Cambridge Introduction to Early English Theatre. Cambridge University Press. |
| Pilling, John (1994). The Cambridge Companion to Beckett. Cambridge University Press. |
| Thomson, Peter (1994). The Cambridge Companion to Brecht. Cambridge University Press. |
| Richards, Shaun (2004). The Cambridge Companion to Twentieth-Century Irish Drama. Cambridge University Press. |