Armed National Guardsmen protect marchers

Chicago citation style
AP Wirephoto. Armed National Guardsmen protect marchers. 1966-08-29. Retrieved from the Digital Public Library of America, http://content.mpl.org/cdm/ref/collection/HstoricPho/id/6473. (Accessed January 27, 2020.)
APA citation style
AP Wirephoto, (1966-08-29) Armed National Guardsmen protect marchers. Retrieved from the Digital Public Library of America, http://content.mpl.org/cdm/ref/collection/HstoricPho/id/6473
MLA citation style
AP Wirephoto. Retrieved from the Digital Public Library of America <http://content.mpl.org/cdm/ref/collection/HstoricPho/id/6473>.
Note: These citations are programmatically generated and may be incomplete.