Unidentified wall with fossil

Chicago citation style
Greene, Richard A., 1903-1984. Unidentified wall with fossil. 1973-05-13. Retrieved from the Digital Public Library of America, http://libx.bsu.edu/cdm/ref/collection/sg/id/1380. (Accessed June 20, 2018.)
APA citation style
Greene, Richard A., 1903-1984, (1973-05-13) Unidentified wall with fossil. Retrieved from the Digital Public Library of America, http://libx.bsu.edu/cdm/ref/collection/sg/id/1380
MLA citation style
Greene, Richard A., 1903-1984. Retrieved from the Digital Public Library of America <http://libx.bsu.edu/cdm/ref/collection/sg/id/1380>.
Note: These citations are programmatically generated and may be incomplete.