Erosion conditions in heavily grazed foothills, old Olcease Ranch, Kern County, California. Dark area on central ridge is remnant of top soil, which judging by the amount of erosion pavement of pebbles left stranded by erosion, was once at least 12 inches deeper than it is today. Gullies have cut deeply through sub-soil and the sterile hardpan. Kraebel-298. July 25, 1930

Chicago citation style
Kraebel, C. J. Erosion conditions in heavily grazed foothills, old Olcease Ranch, Kern County, California. Dark area on central ridge is remnant of top soil, which judging by the amount of erosion pavement of pebbles left stranded by erosion, was once at least 12 inches deeper than it is today. Gullies have cut deeply through sub-soil and the sterile hardpan. Kraebel-298. July 25, 1930. 1930. Retrieved from the Digital Public Library of America, http://dc.lib.berkeley.edu/catalog/Metcalf_metcalf1_2323. (Accessed December 12, 2018.)
APA citation style
Kraebel, C. J, (1930) Erosion conditions in heavily grazed foothills, old Olcease Ranch, Kern County, California. Dark area on central ridge is remnant of top soil, which judging by the amount of erosion pavement of pebbles left stranded by erosion, was once at least 12 inches deeper than it is today. Gullies have cut deeply through sub-soil and the sterile hardpan. Kraebel-298. July 25, 1930. Retrieved from the Digital Public Library of America, http://dc.lib.berkeley.edu/catalog/Metcalf_metcalf1_2323
MLA citation style
Kraebel, C. J. Retrieved from the Digital Public Library of America <http://dc.lib.berkeley.edu/catalog/Metcalf_metcalf1_2323>.
Note: These citations are programmatically generated and may be incomplete.