Ernest Hemingway, May 1918.

Chicago citation style
Hemingway family. Ernest Hemingway, May 1918.. 2015-07-20. Retrieved from the Digital Public Library of America, http://www.idaillinois.org/cdm/ref/collection/p16614coll27/id/122. (Accessed October 25, 2020.)
APA citation style
Hemingway family, (2015-07-20) Ernest Hemingway, May 1918.. Retrieved from the Digital Public Library of America, http://www.idaillinois.org/cdm/ref/collection/p16614coll27/id/122
MLA citation style
Hemingway family. Retrieved from the Digital Public Library of America <http://www.idaillinois.org/cdm/ref/collection/p16614coll27/id/122>.
Note: These citations are programmatically generated and may be incomplete.