APA (7th ed.) Citation

Riva, J. P. (1988). The enigma of natural gas. Congressional Research Service, Library of Congress.

Chicago Style (17th ed.) Citation

Riva, Joseph P. The Enigma of Natural Gas. [Washington, D.C.]: Congressional Research Service, Library of Congress, 1988.

MLA (9th ed.) Citation

Riva, Joseph P. The Enigma of Natural Gas. Congressional Research Service, Library of Congress, 1988.