Unidentified guard operating the "snitch box" at the registration desk on Alcatraz

Chicago citation style
Unidentified guard operating the "snitch box" at the registration desk on Alcatraz. 1956 Mar. 14. Retrieved from the Digital Public Library of America, http://sflib1.sfpl.org:82/record=b1024298. (Accessed December 16, 2018.)
APA citation style
(1956 Mar. 14) Unidentified guard operating the "snitch box" at the registration desk on Alcatraz. Retrieved from the Digital Public Library of America, http://sflib1.sfpl.org:82/record=b1024298
MLA citation style
Retrieved from the Digital Public Library of America <http://sflib1.sfpl.org:82/record=b1024298>.
Note: These citations are programmatically generated and may be incomplete.