APA (7th ed.) Citation

Leonard, D. (1994). Guide to the European union: The original and definitive guide to all aspects of the EU. Penguin Group.

Chicago Style (17th ed.) Citation

Leonard, Dick. Guide to the European Union: The Original and Definitive Guide to All Aspects of the EU. London: Penguin Group, 1994.

MLA (8th ed.) Citation

Leonard, Dick. Guide to the European Union: The Original and Definitive Guide to All Aspects of the EU. Penguin Group, 1994.