SIGN

Chicago citation style
Environmental Protection Agency. 12/2/1970-. SIGN. 1972-07. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/544492. (Accessed June 20, 2018.)
APA citation style
Environmental Protection Agency. 12/2/1970-, (1972-07) SIGN. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/544492
MLA citation style
Environmental Protection Agency. 12/2/1970-. Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/544492>.
Note: These citations are programmatically generated and may be incomplete.