Não informado. (1966). Research Paper NC. North Central Forest Experiment Station.
Chicagoスタイル(17版)引用形式Não informado. Research Paper NC. Saint Paul, Minn: North Central Forest Experiment Station, 1966.
MLA(8版)引用形式Não informado. Research Paper NC. North Central Forest Experiment Station, 1966.
警告: この引用は必ずしも正確ではありません.