poèmes : To a Welsh woman et The circle of C [poèmes dans] Caseg broadsheets of Welshpoetry no.4 (Caseg Press) 1944 - Modern WelshPoetry, édité par Keidrych
Plihon et L. Hommay, 1896, p. 308. (en) Ifor Williams, The beginnings of Welshpoetry (2nde édition), Cardiff, Rachel Bromwich, University of Wales Press,