Liberty Bell is a popular stop for tourists

Chicago citation style
Coward, William S. Liberty Bell is a popular stop for tourists. 1961-07-11. Retrieved from the Digital Public Library of America, http://digital.library.temple.edu/cdm/ref/collection/p15037coll3/id/25553. (Accessed December 16, 2018.)
APA citation style
Coward, William S, (1961-07-11) Liberty Bell is a popular stop for tourists. Retrieved from the Digital Public Library of America, http://digital.library.temple.edu/cdm/ref/collection/p15037coll3/id/25553
MLA citation style
Coward, William S. Retrieved from the Digital Public Library of America <http://digital.library.temple.edu/cdm/ref/collection/p15037coll3/id/25553>.
Note: These citations are programmatically generated and may be incomplete.