United States. Forest Service. (1958). Timber resources for America's future. U.S. Govt. Print. Off.
Citazione stile Chigago Style (17a edizione)United States. Forest Service. Timber Resources for America's Future. [Washington: U.S. Govt. Print. Off, 1958.
Citatione MLA (9a ed.)United States. Forest Service. Timber Resources for America's Future. U.S. Govt. Print. Off, 1958.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.