APA (7th ed.) Citation

United States. Agricultural Research Service & National Arboretum (U.S.). Floral and Nursery Plants Research Unit. (2001). Syringa 'Betsy Ross'. U.S. National Arboretum, U.S. Dept. of Agriculture, Agricultural Research Service.

Chicago Style (17th ed.) Citation

United States. Agricultural Research Service and National Arboretum (U.S.). Floral and Nursery Plants Research Unit. Syringa 'Betsy Ross'. Washington, D.C. (3501 New York Ave., N.E., Washington 20002): U.S. National Arboretum, U.S. Dept. of Agriculture, Agricultural Research Service, 2001.

MLA (9th ed.) Citation

United States. Agricultural Research Service and National Arboretum (U.S.). Floral and Nursery Plants Research Unit. Syringa 'Betsy Ross'. U.S. National Arboretum, U.S. Dept. of Agriculture, Agricultural Research Service, 2001.