APA (7th ed.) Citation

Heldt, P. M. (1951). High-speed combustion engines: Design, production, tests (15th ed. of The gasoline motor.). [publisher not identified].

Chicago Style (17th ed.) Citation

Heldt, Peter Martin. High-speed Combustion Engines: Design, Production, Tests. 15th ed. of The gasoline motor. Nyack, N.Y.: [publisher not identified], 1951.

MLA (9th ed.) Citation

Heldt, Peter Martin. High-speed Combustion Engines: Design, Production, Tests. 15th ed. of The gasoline motor. [publisher not identified], 1951.