Geologic map of Kentucky: showing oil and gas pools and pipelines and the eastern and western coalfields

Chicago citation style
Jillson, Willard Rouse, 1890-1975. Geologic map of Kentucky: showing oil and gas pools and pipelines and the eastern and western coalfields. 1920. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/4m90f6454. (Accessed July 22, 2018.)
APA citation style
Jillson, Willard Rouse, 1890-1975, (1920) Geologic map of Kentucky: showing oil and gas pools and pipelines and the eastern and western coalfields. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/4m90f6454
MLA citation style
Jillson, Willard Rouse, 1890-1975. Retrieved from the Digital Public Library of America <http://ark.digitalcommonwealth.org/ark:/50959/4m90f6454>.
Note: These citations are programmatically generated and may be incomplete.