- Tindall, William Y.. A Reader's Guide to Dylan Thomas. Syracuse, NY: Syracuse Univ. Press, 2007.
- Kidder, Rushworth M.. Dylan Thomas: The Country of the Spirit. Princeton, NJ: Princeton University Press, 2015.
- Goodby, John. The Poetry of Dylan Thomas: Under the Spelling Wall. Liverpool: Liverpool University Press, 2014.
- Thomas, Dylan, and John Goodby. The Collected Poems of Dylan Thomas: The Centenary Edition. London: Weidenfeld & Nicolson, 2016.
- Ackerman, John. John. A Dylan Thomas Companion: Life, Poetry and Prose. London: Macmillan, 1994.
- FitzGibbon, Constantine. The Life of Dylan Thomas. London: Little Brown & Co, 1965.
-
Saunders, Thomas. “Religious Elements in the Poetry of Dylan Thomas.” Dalhousie Review, vol. 45, no. 4, 1966.
-
“Fern Hill.” The Columbia Encyclopedia, 6th Ed, Encyclopedia.com, 2018, www.encyclopedia.com/arts/educational-magazines/fern-hill.