United States. Animal and Plant Health Inspection Service. (2002). Information for commercial and non-commercial importers of nursery stock, plants, roots, bulbs, seeds, and other propagative plant products. U.S. Dept. of Agriculture, Animal and Plant Health Inspection Service.
Chicago Style (17th ed.) CitationUnited States. Animal and Plant Health Inspection Service. Information for Commercial and Non-commercial Importers of Nursery Stock, Plants, Roots, Bulbs, Seeds, and Other Propagative Plant Products. [Riverdale, Md.]: U.S. Dept. of Agriculture, Animal and Plant Health Inspection Service, 2002.
MLA (9th ed.) CitationUnited States. Animal and Plant Health Inspection Service. Information for Commercial and Non-commercial Importers of Nursery Stock, Plants, Roots, Bulbs, Seeds, and Other Propagative Plant Products. U.S. Dept. of Agriculture, Animal and Plant Health Inspection Service, 2002.