Butler, D., & Butler, G. (2000). Twentieth-century British political facts 1900-2000 / by David Butler and Gareth Butler (8th ed.). Macmillan.
Chicago Style (17th ed.) CitationButler, David, and Gareth Butler. Twentieth-century British Political Facts 1900-2000 / by David Butler and Gareth Butler. 8th ed. Basingstoke: Macmillan, 2000.
MLA (9th ed.) CitationButler, David, and Gareth Butler. Twentieth-century British Political Facts 1900-2000 / by David Butler and Gareth Butler. 8th ed. Macmillan, 2000.
Warning: These citations may not always be 100% accurate.