SH-H-H, SILENCE MEANS SECURITY!

Chicago citation style
Office for Emergency Management. Office of War Information. Domestic Operations Branch. Bureau of Special Services. 3/9/1943-9/15/1945. SH-H-H, SILENCE MEANS SECURITY!. 1941-01-01/1945-12-31. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/513596. (Accessed September 26, 2018.)
APA citation style
Office for Emergency Management. Office of War Information. Domestic Operations Branch. Bureau of Special Services. 3/9/1943-9/15/1945, (1941-01-01/1945-12-31) SH-H-H, SILENCE MEANS SECURITY!. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/513596
MLA citation style
Office for Emergency Management. Office of War Information. Domestic Operations Branch. Bureau of Special Services. 3/9/1943-9/15/1945. Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/513596>.
Note: These citations are programmatically generated and may be incomplete.