Protesters holding signs and chanting while police officer stands by during the Vietnam Moratorium demonstration in downtown Seattle, October 15, 1969

Chicago citation style
Karpen, Joseph. Protesters holding signs and chanting while police officer stands by during the Vietnam Moratorium demonstration in downtown Seattle, October 15, 1969. 1969. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/uwcampus/id/34999. (Accessed September 24, 2018.)
APA citation style
Karpen, Joseph, (1969) Protesters holding signs and chanting while police officer stands by during the Vietnam Moratorium demonstration in downtown Seattle, October 15, 1969. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/uwcampus/id/34999
MLA citation style
Karpen, Joseph. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/uwcampus/id/34999>.
Note: These citations are programmatically generated and may be incomplete.