^"Howdenshire Wapentake :: Survey of English Place-Names". epns.nottingham.ac.uk. Retrieved 17 June 2022.
^"Administrative unit Howdenshire Liberty/Wap Ancient District". visionofbritain.org.uk. Retrieved 17 June 2022.
^Sheahan, James Joseph (1857). History and topography of the City of York, the East Riding of Yorkshire, and a portion of the West Riding; embracing a general review of the early history of Great Britain, and a general history and description of the county of York. Beverley: John Green. p. 595. OCLC 5824605.
^"Genuki: HOWDEN, Yorkshire (East Riding)". www.genuki.org.uk. Retrieved 17 June 2022.
^"Howdenshire | Humberside Police". www.humberside.police.uk. Retrieved 17 June 2022.