Cita APA (7a ed.)

Thomson, D., & Warner, G. (1983). England in the Twentieth Century: 1914-79 (2nd ed.). Penguin.

Cita Chicago Style (17a ed.)

Thomson, David, y Geoffrey Warner. England in the Twentieth Century: 1914-79. 2nd ed. Harmondsworth ; Middlesex: Penguin, 1983.

Cita MLA (9a ed.)

Thomson, David, y Geoffrey Warner. England in the Twentieth Century: 1914-79. 2nd ed. Penguin, 1983.