APA (7th ed.) Citation

Holmes, S. L. (1992). Overview of drought and hydrologic conditions in the United States and southern Canada: Water years 1986-90. U.S. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Holmes, Sandra L. Overview of Drought and Hydrologic Conditions in the United States and Southern Canada: Water Years 1986-90. [Reston, Va.]: U.S. Dept. of the Interior, U.S. Geological Survey, 1992.

MLA (9th ed.) Citation

Holmes, Sandra L. Overview of Drought and Hydrologic Conditions in the United States and Southern Canada: Water Years 1986-90. U.S. Dept. of the Interior, U.S. Geological Survey, 1992.