Employees work on an airplane

Chicago citation style
Unknown. Employees work on an airplane. Unknown. Retrieved from the Digital Public Library of America, http://digital.library.temple.edu/cdm/ref/collection/p15037coll3/id/1117. (Accessed December 17, 2018.)
APA citation style
Unknown, (Unknown) Employees work on an airplane. Retrieved from the Digital Public Library of America, http://digital.library.temple.edu/cdm/ref/collection/p15037coll3/id/1117
MLA citation style
Unknown. Retrieved from the Digital Public Library of America <http://digital.library.temple.edu/cdm/ref/collection/p15037coll3/id/1117>.
Note: These citations are programmatically generated and may be incomplete.