Letter from Peter F. Drucker to Albert Shanker

Chicago citation style
Peter F. Drucker. Letter from Peter F. Drucker to Albert Shanker. 1991-11-02. Retrieved from the Digital Public Library of America, http://ccdl.libraries.claremont.edu/cdm/ref/collection/dac/id/5997. (Accessed December 13, 2018.)
APA citation style
Peter F. Drucker, (1991-11-02) Letter from Peter F. Drucker to Albert Shanker. Retrieved from the Digital Public Library of America, http://ccdl.libraries.claremont.edu/cdm/ref/collection/dac/id/5997
MLA citation style
Peter F. Drucker. Retrieved from the Digital Public Library of America <http://ccdl.libraries.claremont.edu/cdm/ref/collection/dac/id/5997>.
Note: These citations are programmatically generated and may be incomplete.