APA (7th ed.) Citation

National Energy Information Center (U.S.). (1981). Energy information directory. U.S. Dept. of Energy, Energy Information Administration, Office of Energy Information Services, National Energy Information Center.

Chicago Style (17th ed.) Citation

National Energy Information Center (U.S.). Energy Information Directory. Washington, DC: U.S. Dept. of Energy, Energy Information Administration, Office of Energy Information Services, National Energy Information Center, 1981.

MLA (9th ed.) Citation

National Energy Information Center (U.S.). Energy Information Directory. U.S. Dept. of Energy, Energy Information Administration, Office of Energy Information Services, National Energy Information Center, 1981.