APA (7th ed.) Citation

National Arboretum (U.S.). (1998). Ulmus 'Patriot': U.S. National Arboretum plant introduction : floral and nursery plants research unit. [U.S. National Arboretum, U.S. Dept. of Agriculture, Agricultural Research Service].

Chicago Style (17th ed.) Citation

National Arboretum (U.S.). Ulmus 'Patriot': U.S. National Arboretum Plant Introduction : Floral and Nursery Plants Research Unit. [Washington, DC] (3501 New York Ave., N.E., Washington 20002): [U.S. National Arboretum, U.S. Dept. of Agriculture, Agricultural Research Service], 1998.

MLA (9th ed.) Citation

National Arboretum (U.S.). Ulmus 'Patriot': U.S. National Arboretum Plant Introduction : Floral and Nursery Plants Research Unit. [U.S. National Arboretum, U.S. Dept. of Agriculture, Agricultural Research Service], 1998.