Letter from Mark H. McCormack to John Davidson

Chicago citation style
McCormack, Mark H. Letter from Mark H. McCormack to John Davidson. 1978-04-06. Retrieved from the Digital Public Library of America, http://credo.library.umass.edu/view/full/mums700-b0005-f004-i029. (Accessed December 12, 2018.)
APA citation style
McCormack, Mark H, (1978-04-06) Letter from Mark H. McCormack to John Davidson. Retrieved from the Digital Public Library of America, http://credo.library.umass.edu/view/full/mums700-b0005-f004-i029
MLA citation style
McCormack, Mark H. Retrieved from the Digital Public Library of America <http://credo.library.umass.edu/view/full/mums700-b0005-f004-i029>.
Note: These citations are programmatically generated and may be incomplete.