Clive Tolley, Shamanism in Norse Myth and Magic, 2 vols., Folklore Fellows Communications 296–97, Helsinki: Academia Scientiarum Fennica, 2009, ISBN9789514110306, p. 488.
Her hefr upp sǫgu þeirra Þorfinnz Karlsefnis oc Snorra Þorbrandzsonar, "Here begins the saga of Thorfinn Karlsefni and Snorri Thorbrandsson"; Arthur Middleton Reeves, (ed. and trans.), The Saga of Eric the Red, also Called the Saga of Thorfinn Karlsefni and Snorri Thorbrandsson, The Finding of Wineland the Good: The History of the Icelandic Discovery of America, London: Henry Frowde, 1890, OCLC461045740, pp. 21–22.