APA (7th ed.) Citation

Ahrendt, W. R., & Talin, J. F. (1947). Automatic regulation (Prelim. ed.). [publisher not identified].

Chicago Style (17th ed.) Citation

Ahrendt, William Robert, and John Ferguson Talin. Automatic Regulation. Prelim. ed. Washington: [publisher not identified], 1947.

MLA (9th ed.) Citation

Ahrendt, William Robert, and John Ferguson Talin. Automatic Regulation. Prelim. ed. [publisher not identified], 1947.