APA (7th ed.) Citation

Heldt.P.M. (1965). High-Speed combustion engines. Oxford \r IBH Publishing Co.

Chicago Style (17th ed.) Citation

Heldt.P.M. High-Speed Combustion Engines. Oxford \r IBH Publishing Co, 1965.

MLA (8th ed.) Citation

Heldt.P.M. High-Speed Combustion Engines. Oxford \r IBH Publishing Co, 1965.

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