Cita APA (7th ed.)

HELDT, P. (1965). High-speed combustion engines: Design-production-tests. Oxford and IBH.

Cita Chicago (17th ed.)

HELDT, P.M. High-speed Combustion Engines: Design-production-tests. Calcutta: Oxford and IBH, 1965.

Cita MLA (9th ed.)

HELDT, P.M. High-speed Combustion Engines: Design-production-tests. Oxford and IBH, 1965.