APA
Stany Zjednoczone, Stany Zjednoczone, . (1950). A water policy for the American people: the report of the Presidentʹs Water Resources Policy Commission : in three volumes. Washington: United States. Government Printing Office.
Chicago
Stany Zjednoczone, Stany Zjednoczone, . 1950. A water policy for the American people: the report of the Presidentʹs Water Resources Policy Commission : in three volumes. Washington: United States. Government Printing Office.
Harvard
Stany Zjednoczone, Stany Zjednoczone, . (1950). A water policy for the American people: the report of the Presidentʹs Water Resources Policy Commission : in three volumes. Washington: United States. Government Printing Office.
MLA
Stany Zjednoczone, Stany Zjednoczone, . A water policy for the American people: the report of the Presidentʹs Water Resources Policy Commission : in three volumes. Washington: United States. Government Printing Office. 1950.