APA (7e ed.) Bronvermelding

Não informado. (2022). USDA Forest Service Research Note PNW. Pacific Northwest Forest and Range Experiment Station.

Chicago (17e ed.) Bronvermelding

Não informado. USDA Forest Service Research Note PNW. Portland, Ore: Pacific Northwest Forest and Range Experiment Station, 2022.

MLA (8e ed.) Bronvermelding

Não informado. USDA Forest Service Research Note PNW. Pacific Northwest Forest and Range Experiment Station, 2022.

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