APA (7th ed.) Citation

Somervell, D. C., Harvey, H. J., & Richards, E. (1959). The British Empire and Commonwealth (Rev.(i.e. 2nd)ed.). Christophers.

Chicago Style (17th ed.) Citation

Somervell, D. C., Heather Joan Harvey, and Evan Richards. The British Empire and Commonwealth. Rev.(i.e. 2nd)ed. Lond.: Christophers, 1959.

MLA (8th ed.) Citation

Somervell, D. C., et al. The British Empire and Commonwealth. Rev.(i.e. 2nd)ed. Christophers, 1959.