APA (7th ed.) Citation

Wallace, H., & Ridley, A. (1985). Europe : the challenge of diversity / Helen Wallace with Adam Ridley: The challenge of diversity. Routledge & Kegan Paul (for) The Royal Institute of International Affairs.

Chicago Style (17th ed.) Citation

Wallace, Helen, and Adam Ridley. Europe : The Challenge of Diversity / Helen Wallace with Adam Ridley: The Challenge of Diversity. London: Routledge & Kegan Paul (for) The Royal Institute of International Affairs, 1985.

MLA (9th ed.) Citation

Wallace, Helen, and Adam Ridley. Europe : The Challenge of Diversity / Helen Wallace with Adam Ridley: The Challenge of Diversity. Routledge & Kegan Paul (for) The Royal Institute of International Affairs, 1985.

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