Cita APA (7a ed.)

Somervell, D. C. (1953). Modern Europe: 1871 - 1950 (9. ed.). Methuen.

Cita Chicago Style (17a ed.)

Somervell, David C. Modern Europe: 1871 - 1950. 9. ed. London: Methuen, 1953.

Cita MLA (9a ed.)

Somervell, David C. Modern Europe: 1871 - 1950. 9. ed. Methuen, 1953.