APA (7th ed.) Citation

National Arboretum (U.S.) & American Conifer Society. (2016). Gotelli conifer collection: U.S. National Arboretum. United States Department of Agriculture, Agricultural Research Service.

Chicago Style (17th ed.) Citation

National Arboretum (U.S.) and American Conifer Society. Gotelli Conifer Collection: U.S. National Arboretum. Washington, DC: United States Department of Agriculture, Agricultural Research Service, 2016.

MLA (9th ed.) Citation

National Arboretum (U.S.) and American Conifer Society. Gotelli Conifer Collection: U.S. National Arboretum. United States Department of Agriculture, Agricultural Research Service, 2016.