APA (7th ed.) Citation

United States. Department of Commerce. (1915). Permissible explosion-proof electric motors for mines: Conditions and requirements for test and approval. GPO.

Chicago Style (17th ed.) Citation

United States. Department of Commerce. Permissible Explosion-proof Electric Motors for Mines: Conditions and Requirements for Test and Approval. [Washington]: GPO, 1915.

MLA (9th ed.) Citation

United States. Department of Commerce. Permissible Explosion-proof Electric Motors for Mines: Conditions and Requirements for Test and Approval. GPO, 1915.