APA (7th ed.) Citation

COI & Central Office of Information. (1994). The british system of government (2a. ed.). HMSO.

Chicago Style (17th ed.) Citation

COI and Central Office of Information. The British System of Government. 2a. ed. Londres: HMSO, 1994.

MLA (9th ed.) Citation

COI and Central Office of Information. The British System of Government. 2a. ed. HMSO, 1994.