Two students studying in library, circa 1977

Chicago citation style
City Center Photography, Inc. Two students studying in library, circa 1977. circa 1977. Retrieved from the Digital Public Library of America, http://cdm15730.contentdm.oclc.org/cdm/ref/collection/p271401coll15/id/591. (Accessed December 14, 2018.)
APA citation style
City Center Photography, Inc, (circa 1977) Two students studying in library, circa 1977. Retrieved from the Digital Public Library of America, http://cdm15730.contentdm.oclc.org/cdm/ref/collection/p271401coll15/id/591
MLA citation style
City Center Photography, Inc. Retrieved from the Digital Public Library of America <http://cdm15730.contentdm.oclc.org/cdm/ref/collection/p271401coll15/id/591>.
Note: These citations are programmatically generated and may be incomplete.