APA (7th ed.) Citation

United States. Animal and Plant Health Inspection Service. Plant Protection and Quarantine Programs. (1986). Witchweed-- agricultural survey (Slightly rev. Jan. 1986.). U.S. Dept. of Agriculture, Animal and Plant Health Inspection Service, Plant Protection and Quarantine.

Chicago Style (17th ed.) Citation

United States. Animal and Plant Health Inspection Service. Plant Protection and Quarantine Programs. Witchweed-- Agricultural Survey. Slightly rev. Jan. 1986. [Hyattsville, Md.]: U.S. Dept. of Agriculture, Animal and Plant Health Inspection Service, Plant Protection and Quarantine, 1986.

MLA (9th ed.) Citation

United States. Animal and Plant Health Inspection Service. Plant Protection and Quarantine Programs. Witchweed-- Agricultural Survey. Slightly rev. Jan. 1986. U.S. Dept. of Agriculture, Animal and Plant Health Inspection Service, Plant Protection and Quarantine, 1986.