APA (7th ed.) Citation

Senior, L. A. (1998). Radon-222 in the ground water of Chester County, Pennsylvania. U.S. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Senior, Lisa A. Radon-222 in the Ground Water of Chester County, Pennsylvania. Lemoyne, Pa.: U.S. Dept. of the Interior, U.S. Geological Survey, 1998.

MLA (9th ed.) Citation

Senior, Lisa A. Radon-222 in the Ground Water of Chester County, Pennsylvania. U.S. Dept. of the Interior, U.S. Geological Survey, 1998.