APA (7th ed.) Citation

(2012). Giant hogweed (Heracleum mantegazzianum): A federal noxious weed. U.S. Department of Agriculture, Animal and Plant Health Inspection Service.

Chicago Style (17th ed.) Citation

Giant Hogweed (Heracleum Mantegazzianum): A Federal Noxious Weed. [Riverdale, Maryland?]: U.S. Department of Agriculture, Animal and Plant Health Inspection Service, 2012.

MLA (9th ed.) Citation

Giant Hogweed (Heracleum Mantegazzianum): A Federal Noxious Weed. U.S. Department of Agriculture, Animal and Plant Health Inspection Service, 2012.