APA (7th ed.) Citation

United States. Bureau of Mines & Visnapuu, A. (1979). Design of a compact muffler for a jumbo drill. Dept. of the Interior, Bureau of Mines.

Chicago Style (17th ed.) Citation

United States. Bureau of Mines and A. Visnapuu. Design of a Compact Muffler for a Jumbo Drill. [Washington]: Dept. of the Interior, Bureau of Mines, 1979.

MLA (9th ed.) Citation

United States. Bureau of Mines and A. Visnapuu. Design of a Compact Muffler for a Jumbo Drill. Dept. of the Interior, Bureau of Mines, 1979.