Leff, Michael C. (2003). "Tradition and Agency in Humanistic Rhetoric". Philosophy and Rhetoric. 36 (2): 135. doi:10.1353/par.2003.0019. JSTOR40238144.
Leff, M. (2001). "Lincoln at Cooper Union: Neo‐classical criticism revisited". Western Journal of Communication. 65 (3): 232–248. doi:10.1080/10570310109374704.
jstor.org
Leff, Michael C. (2003). "Tradition and Agency in Humanistic Rhetoric". Philosophy and Rhetoric. 36 (2): 135. doi:10.1353/par.2003.0019. JSTOR40238144.
"Michael Leff". Department of Communication, College of Communication and Fine Arts, University of Memphis. Archived from the original on 10 August 2009. Retrieved 5 July 2012.
"Michael Leff". Department of Communication, College of Communication and Fine Arts, University of Memphis. Archived from the original on 10 August 2009. Retrieved 5 July 2012.