1. Humphry House and Graham Storey, eds., The Journals and Papers of G.M. Hopkins (Oxford: 1959).
2. Suresh K. Agarwal, Hopkins & Syntax (Jaipur: Bohra Prakashan, 1997).
3. Ruth Miller and Robert A. Greenberg, Poetry an Introduction, 4th ed. (New York: St Martin’s Press, 1981)
4. Gweneth Lilly “The Welsh Influence in the Poetry of Gerard Manley Hopkins,” Modern Language Review XXXVIII (1943): 192-205.
5. Katie Wales, Dictionary of Stylistics (London and New York: Logman, 1989).
6. Jack Myres and Michael Simms, Longman Dictionary and Handbook of Poetry.
7. Hopkins G.M. The Poems of Gerard Manley Hopkins. Eds. W.H. Gardner and N.H. Mackenzie. 4th ed. London: Oxford University Press 1967.(All Poems)