Gran Bretaña. General Post Office. (1957). Broadcasting, copy of an agreement dated 1st February 1957, between the Postmaster-General and the British Broadcasting Corporation: Supplemental to a licence and agreement made the 12th June 1952 between the parties. Her Majesty's Stationery Office.
Cita Chicago Style (17a ed.)Gran Bretaña. General Post Office. Broadcasting, Copy of an Agreement Dated 1st February 1957, Between the Postmaster-General and the British Broadcasting Corporation: Supplemental to a Licence and Agreement Made the 12th June 1952 Between the Parties. London: Her Majesty's Stationery Office, 1957.
Cita MLA (9a ed.)Gran Bretaña. General Post Office. Broadcasting, Copy of an Agreement Dated 1st February 1957, Between the Postmaster-General and the British Broadcasting Corporation: Supplemental to a Licence and Agreement Made the 12th June 1952 Between the Parties. Her Majesty's Stationery Office, 1957.
