APA (7th ed.) Citation

Clarke & White. (1989). Understanding foreign policy: The foreign policy systems approach. Edward Elgar Publishing.

Chicago Style (17th ed.) Citation

Clarke and White. Understanding Foreign Policy: The Foreign Policy Systems Approach. Aldershot, England: Edward Elgar Publishing, 1989.

MLA (8th ed.) Citation

Clarke and White. Understanding Foreign Policy: The Foreign Policy Systems Approach. Edward Elgar Publishing, 1989.