APA (7th ed.) Citation

Great Britain. Central Office of Information. Reference Division. (1971). The central government of Britain (7th ed.). H.M.S.O..

Chicago Style (17th ed.) Citation

Great Britain. Central Office of Information. Reference Division. The Central Government of Britain. 7th ed. London: H.M.S.O., 1971.

MLA (8th ed.) Citation

Great Britain. Central Office of Information. Reference Division. The Central Government of Britain. 7th ed. H.M.S.O., 1971.