Não informado. (1966). Research Paper NC. North Central Forest Experiment Station.
Style de citation Chicago (17e éd.)Não informado. Research Paper NC. Saint Paul, Minn: North Central Forest Experiment Station, 1966.
Style de citation MLA (8e éd.)Não informado. Research Paper NC. North Central Forest Experiment Station, 1966.
Attention : ces citations peuvent ne pas être correctes à 100%.