Howell, P. J. (2003). "Roads and Road Traffic". In Callanan, Mark; Keogan, Justin F. (eds.). Local Government in Ireland: Inside Out. Institute of Public Administration. pp. 189–208 : 190. ISBN9781902448930.; Ó Cearúil, Micheál; Ó Murchú, Máirtín; All-Party Oireachtas Committee on the Constitution (1999). Bunreacht na hÉireann: A study of the Irish text(PDF). Dublin: Stationery Office. p. 50. ISBN9780707664002. Retrieved 21 September 2018.
constitution.ie
archive.constitution.ie
Howell, P. J. (2003). "Roads and Road Traffic". In Callanan, Mark; Keogan, Justin F. (eds.). Local Government in Ireland: Inside Out. Institute of Public Administration. pp. 189–208 : 190. ISBN9781902448930.; Ó Cearúil, Micheál; Ó Murchú, Máirtín; All-Party Oireachtas Committee on the Constitution (1999). Bunreacht na hÉireann: A study of the Irish text(PDF). Dublin: Stationery Office. p. 50. ISBN9780707664002. Retrieved 21 September 2018.