APA (7th ed.) Citation

Hansen, S. M. (1977). Propagation rate of the pyrolysis front in reverse in-situ coal gasification: A computer model. [publisher not identified].

Chicago Style (17th ed.) Citation

Hansen, Steven Michael. Propagation Rate of the Pyrolysis Front in Reverse In-situ Coal Gasification: A Computer Model. University, Ala.: [publisher not identified], 1977.

MLA (9th ed.) Citation

Hansen, Steven Michael. Propagation Rate of the Pyrolysis Front in Reverse In-situ Coal Gasification: A Computer Model. [publisher not identified], 1977.