APA (7th ed.) Citation

Huebner, G. L. (1951). A heterodyne-counter type frequency meter. [publisher not identified].

Chicago Style (17th ed.) Citation

Huebner, George Lee. A Heterodyne-counter Type Frequency Meter. [College Station, Tex.]: [publisher not identified], 1951.

MLA (9th ed.) Citation

Huebner, George Lee. A Heterodyne-counter Type Frequency Meter. [publisher not identified], 1951.