APA (7th ed.) Citation

Geological Survey (U.S.), Montgomery County (Md.), & Gundersen, L. C. S. (1988). Map showing radon potential of rocks and soils in Montgomery County, Maryland. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), Montgomery County (Md.), and L. C. S. Gundersen. Map Showing Radon Potential of Rocks and Soils in Montgomery County, Maryland. Reston, VA: Dept. of the Interior, U.S. Geological Survey, 1988.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Map Showing Radon Potential of Rocks and Soils in Montgomery County, Maryland. Dept. of the Interior, U.S. Geological Survey, 1988.