Southwestern national monuments / National Park Service

Chicago citation style
Southwestern national monuments / National Park Service. 1937. Retrieved from the Digital Public Library of America, http://collections.lib.uwm.edu/cdm/ref/collection/agdm/id/6903. (Accessed April 7, 2020.)
APA citation style
(1937) Southwestern national monuments / National Park Service. Retrieved from the Digital Public Library of America, http://collections.lib.uwm.edu/cdm/ref/collection/agdm/id/6903
MLA citation style
Retrieved from the Digital Public Library of America <http://collections.lib.uwm.edu/cdm/ref/collection/agdm/id/6903>.
Note: These citations are programmatically generated and may be incomplete.