Students gathered around a tree

Chicago citation style
Gottlieb. Students gathered around a tree. 1970-11-12. Retrieved from the Digital Public Library of America, http://digital.library.temple.edu/cdm/ref/collection/p15037coll3/id/54386. (Accessed December 18, 2018.)
APA citation style
Gottlieb, (1970-11-12) Students gathered around a tree. Retrieved from the Digital Public Library of America, http://digital.library.temple.edu/cdm/ref/collection/p15037coll3/id/54386
MLA citation style
Gottlieb. Retrieved from the Digital Public Library of America <http://digital.library.temple.edu/cdm/ref/collection/p15037coll3/id/54386>.
Note: These citations are programmatically generated and may be incomplete.