APA (7th ed.) Citation

Schertz, T. L., Alexander, R. B., & Ohe, D. J. (1991). The Computer Program Estimate Trend (ESTREND), a system for the detection of trends in water-quality data. U.S. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Schertz, Terry L., Richard B. Alexander, and Dane J. Ohe. The Computer Program Estimate Trend (ESTREND), a System for the Detection of Trends in Water-quality Data. Reston, Va.: U.S. Dept. of the Interior, U.S. Geological Survey, 1991.

MLA (9th ed.) Citation

Schertz, Terry L., et al. The Computer Program Estimate Trend (ESTREND), a System for the Detection of Trends in Water-quality Data. U.S. Dept. of the Interior, U.S. Geological Survey, 1991.