Cita APA (7a ed.)

Heldt, P. M. (1967). High-speed combustion engines: Design production tests. P.M.Heldt.

Cita Chicago Style (17a ed.)

Heldt, P. M. High-speed Combustion Engines: Design Production Tests. P.M.Heldt, 1967.

Cita MLA (9a ed.)

Heldt, P. M. High-speed Combustion Engines: Design Production Tests. P.M.Heldt, 1967.