APA (7th ed.) Citation

Butler, D. (1963). The electoral system in Britain since 1918 / by D.E. Butler (2nd ed.). O.U.P..

Chicago Style (17th ed.) Citation

Butler, David. The Electoral System in Britain Since 1918 / by D.E. Butler. 2nd ed. O.U.P., 1963.

MLA (9th ed.) Citation

Butler, David. The Electoral System in Britain Since 1918 / by D.E. Butler. 2nd ed. O.U.P., 1963.

Warning: These citations may not always be 100% accurate.