Amsler Type 2 Polar Planimeter Sold by Dietzgen

Chicago citation style
Amsler, Jacob. Amsler Type 2 Polar Planimeter Sold by Dietzgen. ca 1920. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmah_1214118&repo=DPLA. (Accessed November 17, 2018.)
APA citation style
Amsler, Jacob, (ca 1920) Amsler Type 2 Polar Planimeter Sold by Dietzgen. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Anmah_1214118&repo=DPLA
MLA citation style
Amsler, Jacob. Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Anmah_1214118&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.