APA (7th ed.) Citation

Leonard, R. L. (1998). The Economist: Guide to the European Union ([6th ed.].). Profile Books.

Chicago Style (17th ed.) Citation

Leonard, R. L. The Economist: Guide to the European Union. [6th ed.]. London: Profile Books, 1998.

MLA (9th ed.) Citation

Leonard, R. L. The Economist: Guide to the European Union. [6th ed.]. Profile Books, 1998.