Barnes, H. H. (1967). Roughness characteristics of natural channels: Color photographs and descriptive data for 50 stream channels for which roughness coefficients have been determined. US Geological Survey.
Chicago-Zitierstil (17. Ausg.)Barnes, Harry H. Roughness Characteristics of Natural Channels: Color Photographs and Descriptive Data for 50 Stream Channels for Which Roughness Coefficients Have Been Determined. Washington: US Geological Survey, 1967.
MLA-Zitierstil (9. Ausg.)Barnes, Harry H. Roughness Characteristics of Natural Channels: Color Photographs and Descriptive Data for 50 Stream Channels for Which Roughness Coefficients Have Been Determined. US Geological Survey, 1967.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.