APA (7th ed.) Citation

Groner, A., & Boehm, G. A. W. (1973). Going metric. [publisher not identified].

Chicago Style (17th ed.) Citation

Groner, Alex, and George A. W. Boehm. Going Metric. [New York]: [publisher not identified], 1973.

MLA (9th ed.) Citation

Groner, Alex, and George A. W. Boehm. Going Metric. [publisher not identified], 1973.