Cita APA (7a ed.)

Howard-Smith, I., & Werner, G. J. (1976). Coal conversion technology. Noyes Data Co.

Cita Chicago Style (17a ed.)

Howard-Smith, I., y G. J. Werner. Coal Conversion Technology. Park Ridge, NJ ; London: Noyes Data Co, 1976.

Cita MLA (9a ed.)

Howard-Smith, I., y G. J. Werner. Coal Conversion Technology. Noyes Data Co, 1976.