Joe Louis and Frederick M. Roberts

Chicago citation style
Joe Louis and Frederick M. Roberts. circa 1940s. Retrieved from the Digital Public Library of America, https://oakland.access.preservica.com/file/sdb:digitalFile%7C310d42aa-74f1-46b5-8970-0a2bd88f9b7b. (Accessed December 16, 2018.)
APA citation style
(circa 1940s) Joe Louis and Frederick M. Roberts. Retrieved from the Digital Public Library of America, https://oakland.access.preservica.com/file/sdb:digitalFile%7C310d42aa-74f1-46b5-8970-0a2bd88f9b7b
MLA citation style
Retrieved from the Digital Public Library of America <https://oakland.access.preservica.com/file/sdb:digitalFile%7C310d42aa-74f1-46b5-8970-0a2bd88f9b7b>.
Note: These citations are programmatically generated and may be incomplete.