APA (7th ed.) Citation

Emmett, W. W. (1980). A field calibration of the sediment-trapping characteristics of the Helley-Smith bedload sampler. United States Department of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Emmett, William W. A Field Calibration of the Sediment-trapping Characteristics of the Helley-Smith Bedload Sampler. Washington: United States Department of the Interior, Geological Survey, 1980.

MLA (9th ed.) Citation

Emmett, William W. A Field Calibration of the Sediment-trapping Characteristics of the Helley-Smith Bedload Sampler. United States Department of the Interior, Geological Survey, 1980.