Letter from Mark H. McCormack to Keith MacKenzie

Chicago citation style
McCormack, Mark H. Letter from Mark H. McCormack to Keith MacKenzie. 1979-07-18. Retrieved from the Digital Public Library of America, http://credo.library.umass.edu/view/full/mums700-b0005-f019-i037. (Accessed December 14, 2018.)
APA citation style
McCormack, Mark H, (1979-07-18) Letter from Mark H. McCormack to Keith MacKenzie. Retrieved from the Digital Public Library of America, http://credo.library.umass.edu/view/full/mums700-b0005-f019-i037
MLA citation style
McCormack, Mark H. Retrieved from the Digital Public Library of America <http://credo.library.umass.edu/view/full/mums700-b0005-f019-i037>.
Note: These citations are programmatically generated and may be incomplete.