West Virginia-Pennsylvania, Hancock quadrangle

Chicago citation style
Geological Survey (U.S.). West Virginia-Pennsylvania, Hancock quadrangle. Retrieved from the Digital Public Library of America, http://digital.libraries.psu.edu/cdm/ref/collection/maps1/id/25794. (Accessed December 13, 2018.)
APA citation style
Geological Survey (U.S.), West Virginia-Pennsylvania, Hancock quadrangle. Retrieved from the Digital Public Library of America, http://digital.libraries.psu.edu/cdm/ref/collection/maps1/id/25794
MLA citation style
Geological Survey (U.S.). Retrieved from the Digital Public Library of America <http://digital.libraries.psu.edu/cdm/ref/collection/maps1/id/25794>.
Note: These citations are programmatically generated and may be incomplete.