Plant Variety Protection Expired Certificate Number 7800009 Royal Oak Leaf Lettuce

Chicago citation style
Department of Agriculture. Agricultural Marketing Service. 4/2/1972. Plant Variety Protection Expired Certificate Number 7800009 Royal Oak Leaf Lettuce. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/17393476. (Accessed October 17, 2018.)
APA citation style
Department of Agriculture. Agricultural Marketing Service. 4/2/1972, Plant Variety Protection Expired Certificate Number 7800009 Royal Oak Leaf Lettuce. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/17393476
MLA citation style
Department of Agriculture. Agricultural Marketing Service. 4/2/1972. Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/17393476>.
Note: These citations are programmatically generated and may be incomplete.