DaviesPennar. Yr Efrydd o Lyn Cynon. Llandybïe, Wales: Llyfrau'r Dryw, 1961.
5.
DaviesPennar. Y Tlws yn y Lotws. Llandybïe, Wales: Llyfrau'r Dryw, 1971.
6.
DaviesPennar. Lief. Barddas, 1985.
7.
ElfynM.RowlandsJ., eds. The Bloodaxe Book of Modern Welsh Poetry in Translation. Tarset: Bloodaxe, 2003.
8.
GriffithsJ. Gwyn. “Pennar Davies: More Than a Poeta Docus.”Triskel Two: Essays on Welsh and Anglo-Welsh Literature. Eds. AdamsSamHughesGwilym Rees. Llandybïe, Wales: Christopher Davies, 1973. 111–127.
JonesDafydd Glyn. “Welsh Poetry Since 1945.”Triskel One: Essays on Welsh and Anglo-Welsh Literature. Eds. AdamsSamHughesGwilym Rees. Llandybïe, Wales: Christopher Davies, 1971. 43–64.
11.
LewisSaunders. Rev. of Modern Welsh Poetry, ed. by RhysKeidrych. Yr Efrydydd10 (1946): 53–55.
12.
LlwydAlan, ed. Cerddi R. Williams Parry: Y casgliad cyflawn 1905–1950. Dinbych, Wales: Gwasg Gee, 1998.
13.
MorganD. Densil. “Incarnate Glory: The Spirituality of D. Gwenallt Jones.”Celts and Christians: New Approaches to the Religious Traditions of Britain and Ireland, Ed., AthertonMark. Cardiff: U of Wales P, 2002. 146–68.
14.
MorganD. Densil. Pennar Davies. Caerdydd: Gwasg Prifysgol Cymru, 2003.
15.
MorganD. Densil. “‘Mae gen i gred, mae gen i gân:’ rhai themau ym marddoniaeth Pennar Davies.”Liên Cymru28 (2005): 160–77.
16.
RhysKeidrych, ed. Modern Welsh Poetry. London: Faber & Faber, 1944.
17.
StephensMeic, ed. Artists in Wales. Llandysul, Wales: Gwasg Gomer, 1971.
18.
StephensMeic Ed. The Oxford Companion to the Literature of Wales. Oxford: Oxford UP, 1990.
19.
ThomasM. Wynn. Corresponding Cultures: The Two Literatures of Wales. Cardiff: U of Wales P, 1999.