APA (7th ed.) Citation

Howell, S. P. (1928). Prevention of accidents with explosives in Tri-State zinc and lead ore producing district. [publisher not identified].

Chicago Style (17th ed.) Citation

Howell, S. P. Prevention of Accidents with Explosives in Tri-State Zinc and Lead Ore Producing District. Washington, D.C.: [publisher not identified], 1928.

MLA (9th ed.) Citation

Howell, S. P. Prevention of Accidents with Explosives in Tri-State Zinc and Lead Ore Producing District. [publisher not identified], 1928.