APA (7th ed.) Citation

United States. Office of Atmospheric Water Resources & Sopper, W. E. (1969). Hydrologic behavior of selected watersheds in the northern Appalachian region: By William E. Sopper ... [et al.]. Institute for Research on Land and Water Resources, Pennsylvania State University.

Chicago Style (17th ed.) Citation

United States. Office of Atmospheric Water Resources and William E. Sopper. Hydrologic Behavior of Selected Watersheds in the Northern Appalachian Region: By William E. Sopper ... [et Al.]. University Park: Institute for Research on Land and Water Resources, Pennsylvania State University, 1969.

MLA (9th ed.) Citation

United States. Office of Atmospheric Water Resources and William E. Sopper. Hydrologic Behavior of Selected Watersheds in the Northern Appalachian Region: By William E. Sopper ... [et Al.]. Institute for Research on Land and Water Resources, Pennsylvania State University, 1969.