O'Donnell, Jim (23 April 2013). "The Slave Market of Viking Dublin". Around the World in Eighty Years. Archived from the original on 17 July 2019. Retrieved 31 January 2020.
doi.org
Barrett (2016) p. 4. Barrett, JH (2016). "Maritime Societies and the Transformation of the Viking Age and Medieval World". In Barrett, JH; Gibbon, SJ (eds.). Maritime Societies of the Viking and Medieval World. The Society for Medieval Archaeology Monograph (series vol. 37). Milton Park, Abingdon: Routledge. pp. 1–13. doi:10.4324/9781315630755. ISBN978-1-315-63075-5. ISSN0583-9106.
O'Donnell, Jim (23 April 2013). "The Slave Market of Viking Dublin". Around the World in Eighty Years. Archived from the original on 17 July 2019. Retrieved 31 January 2020.
worldcat.org
search.worldcat.org
Barrett (2016) p. 4. Barrett, JH (2016). "Maritime Societies and the Transformation of the Viking Age and Medieval World". In Barrett, JH; Gibbon, SJ (eds.). Maritime Societies of the Viking and Medieval World. The Society for Medieval Archaeology Monograph (series vol. 37). Milton Park, Abingdon: Routledge. pp. 1–13. doi:10.4324/9781315630755. ISBN978-1-315-63075-5. ISSN0583-9106.