[Rocky Mountains]

Chicago citation style
Beard, George, 1855-1944. [Rocky Mountains]. ca. 1900-1909. Retrieved from the Digital Public Library of America, http://utah-primoprod.hosted.exlibrisgroup.com/primo_library/libweb/action/dlDisplay.do?vid=MWDL&afterPDS=true&docId=digcoll_byu_12GeorgeBeard/1752. (Accessed October 15, 2018.)
APA citation style
Beard, George, 1855-1944, (ca. 1900-1909) [Rocky Mountains]. Retrieved from the Digital Public Library of America, http://utah-primoprod.hosted.exlibrisgroup.com/primo_library/libweb/action/dlDisplay.do?vid=MWDL&afterPDS=true&docId=digcoll_byu_12GeorgeBeard/1752
MLA citation style
Beard, George, 1855-1944. Retrieved from the Digital Public Library of America <http://utah-primoprod.hosted.exlibrisgroup.com/primo_library/libweb/action/dlDisplay.do?vid=MWDL&afterPDS=true&docId=digcoll_byu_12GeorgeBeard/1752>.
Note: These citations are programmatically generated and may be incomplete.