APA (7th ed.) Zitazioa
Morgan, D. D. (2009). Lewis Edwards. Gwasg Prifysgol Cymru.
Chicago Style (17th ed.) Zitazioa
Morgan, D. Densil. Lewis Edwards. Cardiff, Wales: Gwasg Prifysgol Cymru, 2009.
MLA (9th ed.) Zitazioa
Morgan, D. Densil. Lewis Edwards. Gwasg Prifysgol Cymru, 2009.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.