APA (7th ed.) Citation

Oppenheimer, E. J. (1980). Natural gas: The new energy leader. Pen and Podium Productions.

Chicago Style (17th ed.) Citation

Oppenheimer, Ernest J. Natural Gas: The New Energy Leader. New York, N.Y: Pen and Podium Productions, 1980.

MLA (9th ed.) Citation

Oppenheimer, Ernest J. Natural Gas: The New Energy Leader. Pen and Podium Productions, 1980.

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