APA (7th ed.) Citation

Risser, H. E. (1968). Gasification and liquefaction: Their potential impact on various aspects of the coal industry. Illinois State Geological Survey.

Chicago Style (17th ed.) Citation

Risser, Hubert E. Gasification and Liquefaction: Their Potential Impact on Various Aspects of the Coal Industry. Urbana: Illinois State Geological Survey, 1968.

MLA (9th ed.) Citation

Risser, Hubert E. Gasification and Liquefaction: Their Potential Impact on Various Aspects of the Coal Industry. Illinois State Geological Survey, 1968.