APA (7th ed.) Citation

Socialist Union & Socialist Union (London, England). (1956). Twentieth century socialism: The economy of to-morrow. Penguin Books.

Chicago Style (17th ed.) Citation

Socialist Union and England) Socialist Union (London. Twentieth Century Socialism: The Economy of To-morrow. [Harmondsworth, Eng.]: Penguin Books, 1956.

MLA (8th ed.) Citation

Socialist Union and England) Socialist Union (London. Twentieth Century Socialism: The Economy of To-morrow. Penguin Books, 1956.