APA (7th ed.) Citation

Downs, A. W. (1949). Direct injection of water in spark ignition engines. [publisher not identified].

Chicago Style (17th ed.) Citation

Downs, Arthur Wiley. Direct Injection of Water in Spark Ignition Engines. [College Station, Tex.]: [publisher not identified], 1949.

MLA (9th ed.) Citation

Downs, Arthur Wiley. Direct Injection of Water in Spark Ignition Engines. [publisher not identified], 1949.