1. Adams, Hazard. The Book of Yeats’s Poems. Tallahassee: Florida State University Press, 1990.
2. Campbell, Matthew. ‘Dating “Easter, 1916”’. International Yeats Studies, 1. 1 (2016) 54–59.
3. Chapman, Wayne K. Yeats’s Poetry in the Making: Sing Whatever Is Well Made. Basingstoke: Palgrave Macmillan, 2010.
4. Coleridge, Samuel Taylor. Coleridge: Poetical Works, ed. Ernest Hartley Coleridge. 1912; rpt. London: Oxford University Press, 1967.
5. Coole Park Nature Reserve. ‘The Limestone Seat’. https://www.coolepark.ie/history/buildings-remains/.