APA (7th ed.) Citation

Robinson, B. A., & Thompson, R. E. (1995). An observed-streambed-scour index for selected bridges in southwestern Indiana, 1991. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Robinson, Bret A., and R. E. Thompson. An Observed-streambed-scour Index for Selected Bridges in Southwestern Indiana, 1991. Indianapolis, Indiana: U.S. Geological Survey, 1995.

MLA (9th ed.) Citation

Robinson, Bret A., and R. E. Thompson. An Observed-streambed-scour Index for Selected Bridges in Southwestern Indiana, 1991. U.S. Geological Survey, 1995.