APA (7th ed.) Citation

Não informado. (1973). Energy index. Environment Information Center, Energy Reference Department.

Chicago Style (17th ed.) Citation

Não informado. Energy Index. New York: Environment Information Center, Energy Reference Department, 1973.

MLA (8th ed.) Citation

Não informado. Energy Index. Environment Information Center, Energy Reference Department, 1973.

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