A procedure used for a ground truth study of a land use map of north Alabama generated from Landsat data

Chicago citation style
Downs, Sanford Wesley, 1930. A procedure used for a ground truth study of a land use map of north Alabama generated from Landsat data. 1977. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/011444409. (Accessed May 30, 2020.)
APA citation style
Downs, Sanford Wesley, 1930, (1977) A procedure used for a ground truth study of a land use map of north Alabama generated from Landsat data. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/011444409
MLA citation style
Downs, Sanford Wesley, 1930. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/011444409>.
Note: These citations are programmatically generated and may be incomplete.