Não informado. (1986). Washington Park Arboretum bulletin. University of Washington, Arboretum Foundation.
Style de citation Chicago (17e éd.)Não informado. Washington Park Arboretum Bulletin. Seattle, Wash: University of Washington, Arboretum Foundation, 1986.
Style de citation MLA (8e éd.)Não informado. Washington Park Arboretum Bulletin. University of Washington, Arboretum Foundation, 1986.
Attention : ces citations peuvent ne pas être correctes à 100%.