APA (7th ed.) Citation

Geological Survey (U.S.) & Robson, S. G. (1996). Geohydrology of the shallow aquifers in the Denver metropolitan area, Colorado. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.) and Stanley G. Robson. Geohydrology of the Shallow Aquifers in the Denver Metropolitan Area, Colorado. Reston, Va.: The Survey, 1996.

MLA (9th ed.) Citation

Geological Survey (U.S.) and Stanley G. Robson. Geohydrology of the Shallow Aquifers in the Denver Metropolitan Area, Colorado. The Survey, 1996.