APA (7e ed.) Bronvermelding

Não informado. (2000). Technical notes. U.S. Lake States Forest Experiment Station.

Chicago (17e ed.) Bronvermelding

Não informado. Technical Notes. Saint Paul, Minn: U.S. Lake States Forest Experiment Station, 2000.

MLA (8e ed.) Bronvermelding

Não informado. Technical Notes. U.S. Lake States Forest Experiment Station, 2000.

Let op: Deze citaties zijn niet altijd 100% accuraat.