Source et copyright
Source: Parliamentary Debates. House of Commons. Official Report. First session of the Forty-Fifth Parliament of the United Kingdom of Great Britain and Northern Ireland. Twentieth year of the reign of her Majesty Queen Elizabeth II. Dir. of publ. Hansard. 1970-71, No 823; fifth series. London: Her Majesty's Stationery Office. "European Communities", p. 1235-1250; 2079-2090; 2119-2121; 2211-2217.
Copyright: Crown copyright is reproduced with the permission of the Controller of Her Majesty's Stationery Office and the Queen's Printer for Scotland