Sophocles (in a version by W. B. Yeats), Oedipus Rex. DVD. Dir. Tyrone Guthrie (1957). [Central Library and YouTube]
Plato, Sections 595a-607a, Republic. Trans. Christopher Rowe (London: Penguin, 2012), pp. 339-356. [e-Reserves - you can also download a free podcast of this section (the first half of Book X), here]
Aristotle, Chapters 5 and 6, Poetics. Trans. Malcolm Heath (London: Penguin, 1996), pp. 13-20 [e-Reserves]
Barish, Jonas. ‘Platonic Foundations’ in The Antitheatrical Prejudice. Berkeley: University of California Press, 1981, pp. 5-31. [e-Reserves]
Wertenbaker, Timberlake. Our Country's Good (London: Methuen: 2006)