Heldt.P.M. (1965). High-Speed combustion engines. Oxford \r IBH Publishing Co.
Chicago Style (17th ed.) CitationHeldt.P.M. High-Speed Combustion Engines. Oxford \r IBH Publishing Co, 1965.
MLA (8th ed.) CitationHeldt.P.M. High-Speed Combustion Engines. Oxford \r IBH Publishing Co, 1965.
Warning: These citations may not always be 100% accurate.