APA (7th ed.) Citation

United States. Agricultural Marketing Service. (1997). Plant Variety Protection Act and regulations and rules of practice (Rev. July 1997.). U.S. Dept. of Agriculture, Agricultural Marketing Service.

Chicago Style (17th ed.) Citation

United States. Agricultural Marketing Service. Plant Variety Protection Act and Regulations and Rules of Practice. Rev. July 1997. [Washington, D.C.?]: U.S. Dept. of Agriculture, Agricultural Marketing Service, 1997.

MLA (9th ed.) Citation

United States. Agricultural Marketing Service. Plant Variety Protection Act and Regulations and Rules of Practice. Rev. July 1997. U.S. Dept. of Agriculture, Agricultural Marketing Service, 1997.