APA (7th ed.) Citation

Conquest, R. (1971). The great terror: Stalin's purge of the thirties (Revised ed.). Penguin.

Chicago Style (17th ed.) Citation

Conquest, Robert. The Great Terror: Stalin's Purge of the Thirties. Revised ed. Harmondsworth: Penguin, 1971.

MLA (9th ed.) Citation

Conquest, Robert. The Great Terror: Stalin's Purge of the Thirties. Revised ed. Penguin, 1971.