APA (7th ed.) Citation

Thatcher, J. W. (1975). The determination of free silica in airborne dust collected on membrane filters. U.S. Dept. of the Interior, Mining Enforcement and Safety Administration.

Chicago Style (17th ed.) Citation

Thatcher, John W. The Determination of Free Silica in Airborne Dust Collected on Membrane Filters. Washington: U.S. Dept. of the Interior, Mining Enforcement and Safety Administration, 1975.

MLA (9th ed.) Citation

Thatcher, John W. The Determination of Free Silica in Airborne Dust Collected on Membrane Filters. U.S. Dept. of the Interior, Mining Enforcement and Safety Administration, 1975.