APA (7th ed.) Citation

Cambridge Information and Research Services Ltd, Swain, C., & Buckley, A. R. (1981). World directory of energy information. Facts on File.

Chicago Style (17th ed.) Citation

Cambridge Information and Research Services Ltd, Christopher Swain, and Andrew Robert Buckley. World Directory of Energy Information. New York, N.Y.: Facts on File, 1981.

MLA (9th ed.) Citation

Cambridge Information and Research Services Ltd, et al. World Directory of Energy Information. Facts on File, 1981.