Obsidian Arrow Heads

Chicago citation style
Obsidian Arrow Heads. 1887. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhanthropology_8012949&repo=DPLA. (Accessed November 13, 2018.)
APA citation style
(1887) Obsidian Arrow Heads. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhanthropology_8012949&repo=DPLA
MLA citation style
Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Anmnhanthropology_8012949&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.