APA (7th ed.) Citation

Hardenberg, H. O. (1999). The middle ages of the internal-combustion engine, 1794-1886 / Horst O. Hardenberg. Society of Automotive Engineers.

Chicago Style (17th ed.) Citation

Hardenberg, Horst O. The Middle Ages of the Internal-combustion Engine, 1794-1886 / Horst O. Hardenberg. Warrendale, Pa.: Society of Automotive Engineers, 1999.

MLA (9th ed.) Citation

Hardenberg, Horst O. The Middle Ages of the Internal-combustion Engine, 1794-1886 / Horst O. Hardenberg. Society of Automotive Engineers, 1999.

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