Citazione Stile APA (7a Edizione)

Butler, D. E. (1963). The Electoral system in Britain since 1918 (2nd ed.). Clarendon.

Citazione stile Chigago Style (17a edizione)

Butler, D. E. The Electoral System in Britain Since 1918. 2nd ed. Oxford: Clarendon, 1963.

Citatione MLA (9a ed.)

Butler, D. E. The Electoral System in Britain Since 1918. 2nd ed. Clarendon, 1963.