John Millington Synge (2014). “Synge: Complete Plays: In the Shadow of the Glen; Riders to the Sea; The Tinker's Wedding; The Well of the Saints; The Playboy of the Western World; Deirdre of the Sorrows”, p.31, Bloomsbury Publishing
William Shakespeare, John Payne Collier, Charles Knight (1847). “Romeo and Juliet. Othello. Hamlet. Macbeth. King Lear. Cymbeline. Timon of Athens. Coriolanus. Julius Caesar. Anthony and Cleopatra. Troilus and Cressida. Titus Andronicus. Pericles”
John Keats (2015). “The Complete Poetry of John Keats: Ode on a Grecian Urn + Ode to a Nightingale + Hyperion + Endymion + The Eve of St. Agnes + Isabella + Ode to Psyche + Lamia + Sonnets and more from one of the most beloved English Romantic poets”, p.660, e-artnow