Geological Formations: Lava

Chicago citation style
Department of Agriculture. Forest Service. 7/1/1905-. Geological Formations: Lava. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/7050967. (Accessed July 21, 2018.)
APA citation style
Department of Agriculture. Forest Service. 7/1/1905-, Geological Formations: Lava. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/7050967
MLA citation style
Department of Agriculture. Forest Service. 7/1/1905-. Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/7050967>.
Note: These citations are programmatically generated and may be incomplete.