Database of the geologic map of North America, adopted from the map by J.C. Reed, Jr. and others (2005)
MLA
Garrity, Christopher P, and D. R Soller. Database of the Geologic Map of North America, Adopted From the Map by J.c. Reed, Jr. and Others (2005). Data Series. Version 1.0. Reston, Va.: U.S. Dept. of the Interior, U.S. Geological Survey, 2009
APA, 7th edition
Garrity, C. P, & Soller, D. R. (2009). Database of the geologic map of North America, adopted from the map by J.C. Reed, Jr. and others (2005). Data series. Version 1.0. Reston, Va.: U.S. Dept. of the Interior, U.S. Geological Survey
Chicago, 17th edition
Garrity, Christopher P., and D. R Soller. Database of the geologic map of North America, adopted from the map by J.C. Reed, Jr. and others (2005). Data series. Version 1.0. Reston, Va.: U.S. Dept. of the Interior, U.S. Geological Survey, 2009