Citazione Stile APA (7a Edizione)

Butler, D. E., Butler, G., & Butler, D. (2000). Twentieth-century British political facts, 1900-2000 (8th ed.). Macmillan.

Citazione stile Chigago Style (17a edizione)

Butler, David E., Gareth Butler, e David Butler. Twentieth-century British Political Facts, 1900-2000. 8th ed. Houndmills, Basingstoke, Hampshire: Macmillan, 2000.

Citatione MLA (9a ed.)

Butler, David E., et al. Twentieth-century British Political Facts, 1900-2000. 8th ed. Macmillan, 2000.