Aberystwyth, National Library of Wales, Peniarth MS 29 = Black Book of Chirk (Llyfr Du o'r Waun)
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Lewis, Timothy, “Copy of the Black Book of Chirk Peniarth: Ms. 29 National Library of Wales Aberwystwyth”, Zeitschrift für celtische Philologie 20 (1936): 30–96.
Loth, Joseph, “L'élégie du Black Book of Chirk”, Revue Celtique 32 (1911): 203–204.
Internet Archive: <link>
Evans, J. Gwenogvryn, Facsimile of the Chirk codex of the Welsh laws, Llanbedrog, 1909. <link>
Evans, J. Gwenogvryn, Report on manuscripts in the Welsh language, vol. 1:2: Peniarth, Historical Manuscripts Commission, London, 1899.
Internet Archive: <link>
359   “MS 29”
Hen. 26