Não informado. (2000). Technical notes. U.S. Lake States Forest Experiment Station.
Chicagoスタイル(17版)引用形式Não informado. Technical Notes. Saint Paul, Minn: U.S. Lake States Forest Experiment Station, 2000.
MLA(8版)引用形式Não informado. Technical Notes. U.S. Lake States Forest Experiment Station, 2000.
警告: この引用は必ずしも正確ではありません.