APA (7th ed.) Citation

Hoffman, E. J. (1978). Coal conversion. Energon Comp.

Chicago Style (17th ed.) Citation

Hoffman, Edward J. Coal Conversion. Laramie, Wyo: Energon Comp, 1978.

MLA (9th ed.) Citation

Hoffman, Edward J. Coal Conversion. Energon Comp, 1978.

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