Usda. (1996). America'S Private Land, A Geography Of Hope (1. Edisyon.). United States Department Of Agriculture.
Chicago Style (17. basım) AtıfUsda. America'S Private Land, A Geography Of Hope. 1. Edisyon. Washington: United States Department Of Agriculture, 1996.
MLA (9th ed.) AtıfUsda. America'S Private Land, A Geography Of Hope. 1. Edisyon. United States Department Of Agriculture, 1996.
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