APA (7th ed.) Citation

Heldt, P. M. (1948). High-speed combustion engines: Design, production, tests (14th ed. of The gasoline motor.). P.M. Heldt.

Chicago Style (17th ed.) Citation

Heldt, Peter Martin. High-speed Combustion Engines: Design, Production, Tests. 14th ed. of The gasoline motor. Nyack, N.Y.: P.M. Heldt, 1948.

MLA (9th ed.) Citation

Heldt, Peter Martin. High-speed Combustion Engines: Design, Production, Tests. 14th ed. of The gasoline motor. P.M. Heldt, 1948.