Alexander Graham Bell's Telephone Patent Drawing and Oath

Chicago citation style
Department of Commerce. Patent and Trademark Office. (1975). Alexander Graham Bell's Telephone Patent Drawing and Oath. 1876-03-07. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/302052. (Accessed January 19, 2019.)
APA citation style
Department of Commerce. Patent and Trademark Office. (1975), (1876-03-07) Alexander Graham Bell's Telephone Patent Drawing and Oath. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/302052
MLA citation style
Department of Commerce. Patent and Trademark Office. (1975). Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/302052>.
Note: These citations are programmatically generated and may be incomplete.