Dr. Robert L. Johnson

Chicago citation style
Dr. Robert L. Johnson. Circa=1950. Retrieved from the Digital Public Library of America, http://digital.library.temple.edu/cdm/ref/collection/p245801coll0/id/3606. (Accessed December 16, 2018.)
APA citation style
(Circa=1950) Dr. Robert L. Johnson. Retrieved from the Digital Public Library of America, http://digital.library.temple.edu/cdm/ref/collection/p245801coll0/id/3606
MLA citation style
Retrieved from the Digital Public Library of America <http://digital.library.temple.edu/cdm/ref/collection/p245801coll0/id/3606>.
Note: These citations are programmatically generated and may be incomplete.