Departament of the Interior. (1974). Earth manual: A water resources technical publication (2a. ed.). United States Government Printing Office.
Citazione stile Chigago Style (17a edizione)Departament of the Interior. Earth Manual: A Water Resources Technical Publication. 2a. ed. Washington, D.C: United States Government Printing Office, 1974.
Citatione MLA (9a ed.)Departament of the Interior. Earth Manual: A Water Resources Technical Publication. 2a. ed. United States Government Printing Office, 1974.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.