APA (7th ed.) Citation

Heldt, P. M. (1944). High-speed diesel engines for automotive, aeronautical, marine, railroad and industrial use (4th ed.). Heldt.

Chicago Style (17th ed.) Citation

Heldt, P. M. High-speed Diesel Engines for Automotive, Aeronautical, Marine, Railroad and Industrial Use. 4th ed. Nyack, N.Y.: Heldt, 1944.

MLA (8th ed.) Citation

Heldt, P. M. High-speed Diesel Engines for Automotive, Aeronautical, Marine, Railroad and Industrial Use. 4th ed. Heldt, 1944.