APA (7th ed.) Citation

Great Britain. General Register Office. (1965). Census 1961, England and Wales, migration, national summary tables. H.M.S.O..

Chicago Style (17th ed.) Citation

Great Britain. General Register Office. Census 1961, England and Wales, Migration, National Summary Tables. London: H.M.S.O., 1965.

MLA (8th ed.) Citation

Great Britain. General Register Office. Census 1961, England and Wales, Migration, National Summary Tables. H.M.S.O., 1965.