Rescue workers gathered in the center of a debris pile at the World Trade Center site in New York city after the September 11th terrorist attack

Chicago citation style
Rescue workers gathered in the center of a debris pile at the World Trade Center site in New York city after the September 11th terrorist attack. Retrieved from the Digital Public Library of America, http://collections.mohistory.org/resource/155671. (Accessed October 22, 2018.)
APA citation style
Rescue workers gathered in the center of a debris pile at the World Trade Center site in New York city after the September 11th terrorist attack. Retrieved from the Digital Public Library of America, http://collections.mohistory.org/resource/155671
MLA citation style
Retrieved from the Digital Public Library of America <http://collections.mohistory.org/resource/155671>.
Note: These citations are programmatically generated and may be incomplete.