APA (7th ed.) Citation

Socialist Union <Londra>. (1956). Twentieth century socialism: The economy of to-morrow. Penguin books.

Chicago Style (17th ed.) Citation

Socialist Union <Londra>. Twentieth Century Socialism: The Economy of To-morrow. London: Penguin books, 1956.

MLA (8th ed.) Citation

Socialist Union <Londra>. Twentieth Century Socialism: The Economy of To-morrow. Penguin books, 1956.

Warning: These citations may not always be 100% accurate.