Marble Canon, one of the Gorges of the Colorado, here 1,200 feet deep. The steep cliff is grey limestone and the slope a brilliant red sandstone.--Photographer: Wm. Bell--Photographer's number: 28--Photographer's series: Expedition of 1872

Chicago citation style
Marble Canon, one of the Gorges of the Colorado, here 1,200 feet deep. The steep cliff is grey limestone and the slope a brilliant red sandstone.--Photographer: Wm. Bell--Photographer's number: 28--Photographer's series: Expedition of 1872. Retrieved from the Digital Public Library of America, http://ark.cdlib.org/ark:/13030/tf809nb6q1. (Accessed December 13, 2018.)
APA citation style
Marble Canon, one of the Gorges of the Colorado, here 1,200 feet deep. The steep cliff is grey limestone and the slope a brilliant red sandstone.--Photographer: Wm. Bell--Photographer's number: 28--Photographer's series: Expedition of 1872. Retrieved from the Digital Public Library of America, http://ark.cdlib.org/ark:/13030/tf809nb6q1
MLA citation style
Retrieved from the Digital Public Library of America <http://ark.cdlib.org/ark:/13030/tf809nb6q1>.
Note: These citations are programmatically generated and may be incomplete.