APA (7th ed.) Citation

Harrington, J. A. (1982). Drought patterns in Oklahoma and the Great Plains. Oklahoma Climatological Survey.

Chicago Style (17th ed.) Citation

Harrington, John A. Drought Patterns in Oklahoma and the Great Plains. Oklahoma City: Oklahoma Climatological Survey, 1982.

MLA (9th ed.) Citation

Harrington, John A. Drought Patterns in Oklahoma and the Great Plains. Oklahoma Climatological Survey, 1982.