APA (7th ed.) Citation

Strub, J. E. (1962). The symmetric method. [publisher not identified].

Chicago Style (17th ed.) Citation

Strub, James Earl. The Symmetric Method. [College Station, Tex.]: [publisher not identified], 1962.

MLA (9th ed.) Citation

Strub, James Earl. The Symmetric Method. [publisher not identified], 1962.