APA (7th ed.) Citation

Gordon, J. D. (1997). External quality-assurance results for the National Atmospheric Deposition Program/National Trends Network during 1994. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Gordon, J. D. External Quality-assurance Results for the National Atmospheric Deposition Program/National Trends Network During 1994. Denver, Colorado: U.S. Geological Survey, 1997.

MLA (9th ed.) Citation

Gordon, J. D. External Quality-assurance Results for the National Atmospheric Deposition Program/National Trends Network During 1994. U.S. Geological Survey, 1997.