Ardgal mac Matudáin: Perbedaan antara revisi

* Bryne, Francis J. ''Irish Kings and High Kings''. New York: St. Martin's Press, 1973.

* Charles-Edwards, T.M. ''Early Christian Ireland''. Cambridge: Cambridge University Press, 2000. {{ISBN|9780521363952}}

* Moody, T.W.; F.J. Byrne and F.X. Martin, ed. ''A New History of Ireland''. Vol. IX. New York: Oxford University Press, 1982. {{ISBN|0-19-821744-7}}

* ''[[Annals of Ulster]]''