Barnes, H. H. (1967). Roughness characteristics of natural channels. U.S. Government Printing Office.
Citazione stile Chigago Style (17a edizione)Barnes, Harry H. Roughness Characteristics of Natural Channels. Washington: U.S. Government Printing Office, 1967.
Citatione MLA (9a ed.)Barnes, Harry H. Roughness Characteristics of Natural Channels. U.S. Government Printing Office, 1967.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.