Não informado. (2022). Tree Planters' Notes. U.S. Department of Agriculture, Forest Service.
Chicago (17e ed.) BronvermeldingNão informado. Tree Planters' Notes. Washington: U.S. Department of Agriculture, Forest Service, 2022.
MLA (8e ed.) BronvermeldingNão informado. Tree Planters' Notes. U.S. Department of Agriculture, Forest Service, 2022.
Let op: Deze citaties zijn niet altijd 100% accuraat.