Citazione Stile APA (7a Edizione)

Appel, C. A., & Reilly, T. E. (1994). Summary of selected computer programs produced by the U.S. Geological Survey for simulation of ground-water flow and quality, 1994. USGS Map Distribution.

Citazione stile Chigago Style (17a edizione)

Appel, Charles A., e Thomas E. Reilly. Summary of Selected Computer Programs Produced by the U.S. Geological Survey for Simulation of Ground-water Flow and Quality, 1994. Denver, Colorado: USGS Map Distribution, 1994.

Citatione MLA (9a ed.)

Appel, Charles A., e Thomas E. Reilly. Summary of Selected Computer Programs Produced by the U.S. Geological Survey for Simulation of Ground-water Flow and Quality, 1994. USGS Map Distribution, 1994.