APA (7th ed.) Citation

Clark, J. G. (1990). The Political Economy of World Energy: A Twentieth-Century Perspective. Wheatsheaf.

Chicago Style (17th ed.) Citation

Clark, John Garretson. The Political Economy of World Energy: A Twentieth-Century Perspective. New York u.a: Wheatsheaf, 1990.

MLA (9th ed.) Citation

Clark, John Garretson. The Political Economy of World Energy: A Twentieth-Century Perspective. Wheatsheaf, 1990.