APA (7th ed.) Citation

Shapiro, C. H. (1925). Temperature control system for dressing and tempering fishtail bits. [publisher not identified].

Chicago Style (17th ed.) Citation

Shapiro, Charles H. Temperature Control System for Dressing and Tempering Fishtail Bits. Washington, D.C.: [publisher not identified], 1925.

MLA (8th ed.) Citation

Shapiro, Charles H. Temperature Control System for Dressing and Tempering Fishtail Bits. [publisher not identified], 1925.