Petroglyphs (rock carvings) in the Susquehanna River near Safe Harbor, Pennsylvania

Chicago citation style
Cadzow, Donald A. Petroglyphs (rock carvings) in the Susquehanna River near Safe Harbor, Pennsylvania. 1934. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/007925114. (Accessed December 12, 2018.)
APA citation style
Cadzow, Donald A, (1934) Petroglyphs (rock carvings) in the Susquehanna River near Safe Harbor, Pennsylvania. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/007925114
MLA citation style
Cadzow, Donald A. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/007925114>.
Note: These citations are programmatically generated and may be incomplete.