Não informado. (2000). Trees magazine. National Arborist Association.
Style de citation Chicago (17e éd.)Não informado. Trees Magazine. Santa Monica, Calif: National Arborist Association, 2000.
Style de citation MLA (8e éd.)Não informado. Trees Magazine. National Arborist Association, 2000.
Attention : ces citations peuvent ne pas être correctes à 100%.