Adjacent lands study, Grand Canyon National Park, Arizona

Chicago citation style
Adjacent lands study, Grand Canyon National Park, Arizona. [1981]. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/007419096. (Accessed September 24, 2018.)
APA citation style
([1981]) Adjacent lands study, Grand Canyon National Park, Arizona. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/007419096
MLA citation style
Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/007419096>.
Note: These citations are programmatically generated and may be incomplete.