Não informado. (1932). American Forests. American Forestry Association.
Chicagoスタイル(17版)引用形式Não informado. American Forests. Washington: American Forestry Association, 1932.
MLA(8版)引用形式Não informado. American Forests. American Forestry Association, 1932.
警告: この引用は必ずしも正確ではありません.