Cita APA (7a ed.)

Thomas, H. (1977). The Spanish civil War (3rd ed.). Penguin.

Cita Chicago Style (17a ed.)

Thomas, Hugh. The Spanish Civil War. 3rd ed. Harmondsworth: Penguin, 1977.

Cita MLA (9a ed.)

Thomas, Hugh. The Spanish Civil War. 3rd ed. Penguin, 1977.