APA (7th ed.) Citation

Ruddy, B. C. (1993). Water-quality variations and trends in Monument and Fountain creeks, El Paso and Pueblo counties, Colorado, water years 1976-88. U.S. Dept. of the Interior, U.S. Geological Survey : Denver, CO.

Chicago Style (17th ed.) Citation

Ruddy, Barbara C. Water-quality Variations and Trends in Monument and Fountain Creeks, El Paso and Pueblo Counties, Colorado, Water Years 1976-88. Denver, Colo.: U.S. Dept. of the Interior, U.S. Geological Survey : Denver, CO, 1993.

MLA (9th ed.) Citation

Ruddy, Barbara C. Water-quality Variations and Trends in Monument and Fountain Creeks, El Paso and Pueblo Counties, Colorado, Water Years 1976-88. U.S. Dept. of the Interior, U.S. Geological Survey : Denver, CO, 1993.