Meshoppen quadrangle, Pennsylvania : 15 minute series (topographic)

Chicago citation style
Geological Survey (U.S.). Meshoppen quadrangle, Pennsylvania : 15 minute series (topographic). 1952. Retrieved from the Digital Public Library of America, http://collection1.libraries.psu.edu/cdm/ref/collection/maps1/id/900. (Accessed September 20, 2018.)
APA citation style
Geological Survey (U.S.), (1952) Meshoppen quadrangle, Pennsylvania : 15 minute series (topographic). Retrieved from the Digital Public Library of America, http://collection1.libraries.psu.edu/cdm/ref/collection/maps1/id/900
MLA citation style
Geological Survey (U.S.). Retrieved from the Digital Public Library of America <http://collection1.libraries.psu.edu/cdm/ref/collection/maps1/id/900>.
Note: These citations are programmatically generated and may be incomplete.