APA (7th ed.) Citation

United States. Plant Variety Protection Office. (1979). Plant Variety Protection Office official journal. U.S. Dept. of Agriculture, Agricultural Marketing Service.

Chicago Style (17th ed.) Citation

United States. Plant Variety Protection Office. Plant Variety Protection Office Official Journal. Beltsville, Md.: U.S. Dept. of Agriculture, Agricultural Marketing Service, 1979.

MLA (9th ed.) Citation

United States. Plant Variety Protection Office. Plant Variety Protection Office Official Journal. U.S. Dept. of Agriculture, Agricultural Marketing Service, 1979.