APA (7th ed.) Citation

United States. Public Health Service. (1939). Silicosis and lead poisoning among pottery workers. [s.n.].

Chicago Style (17th ed.) Citation

United States. Public Health Service. Silicosis and Lead Poisoning Among Pottery Workers. [Washington]: [s.n.], 1939.

MLA (9th ed.) Citation

United States. Public Health Service. Silicosis and Lead Poisoning Among Pottery Workers. [s.n.], 1939.

Warning: These citations may not always be 100% accurate.