APA (7th ed.) Citation

Salis, A. E. (1951). A new microwave spectroscope. [publisher not identified].

Chicago Style (17th ed.) Citation

Salis, Andrew E. A New Microwave Spectroscope. [College Station, Tex.]: [publisher not identified], 1951.

MLA (9th ed.) Citation

Salis, Andrew E. A New Microwave Spectroscope. [publisher not identified], 1951.