APA (7th ed.) Citation

Stone, R. R. (1981). Desulfurization of Texas lignite using steam and air. [publisher not identified].

Chicago Style (17th ed.) Citation

Stone, Robert Reginald. Desulfurization of Texas Lignite Using Steam and Air. [Place of publication not identified]: [publisher not identified], 1981.

MLA (9th ed.) Citation

Stone, Robert Reginald. Desulfurization of Texas Lignite Using Steam and Air. [publisher not identified], 1981.