APA (7th ed.) Citation

Walker, D. H. (1977). The use and conservation of natural gas in the steel industry. American Gas Association.

Chicago Style (17th ed.) Citation

Walker, David H. The Use and Conservation of Natural Gas in the Steel Industry. [Arlington, Va.]: American Gas Association, 1977.

MLA (9th ed.) Citation

Walker, David H. The Use and Conservation of Natural Gas in the Steel Industry. American Gas Association, 1977.