Anderson, Alan Orr Early Sources of Scottish History, A. D. 500 To 1286, Bibliobazaar, ed. reprinted, 2010,
ISBN1176518542
References
^Carl Phelpstead (2007), Holy Vikings: Saints' Lives in the Old Icelandic Kings' Sagas, Arizona Center for Medieval and Renaissance Studies,
ISBN0866983880 p. 113.
^Halldór Hermannsson (1937), The Sagas of the Kings: (Konunga Sögur) and the Mythical-heroic Sagas (Fornaldar Sögur), Two Bibliographical Supplements, Cornell University Press, p. 7.
^Flateyjarbok: en samling af norske kongesagaer med indskudte mindre fortaellinger om begivenheder i og udenfor Norge samt annaler : udgiven efter offentlig foranstaltning, ed. Malling, 1862, Vol. 2, p. 529.