APA (7th ed.) Citation

United States. Bureau of Mines. (1923). Who may set off blasts in coal mines. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Bureau of Mines. Who May Set off Blasts in Coal Mines. [Washington]: [publisher not identified], 1923.

MLA (9th ed.) Citation

United States. Bureau of Mines. Who May Set off Blasts in Coal Mines. [publisher not identified], 1923.

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