APA (7th ed.) Citation

Helsel, D. R., & Hirsch, R. M. (1992). Statistical methods in water resources / D.R. Helsel and R.M. Hirsch. Elsevier.

Chicago Style (17th ed.) Citation

Helsel, D. R., and R. M. Hirsch. Statistical Methods in Water Resources / D.R. Helsel and R.M. Hirsch. Amsterdam ; London: Elsevier, 1992.

MLA (9th ed.) Citation

Helsel, D. R., and R. M. Hirsch. Statistical Methods in Water Resources / D.R. Helsel and R.M. Hirsch. Elsevier, 1992.

Warning: These citations may not always be 100% accurate.