1. Cooper, Lane. 1932.The Rhetoric of Aristotle240New York
2. Quintilian. 1921.The Institutes of OratoryEdited by: Butler, H. E. Vol. II, 34–35. New York Book IV
3. Cicero. 1881.De OratoreEdited by: Watson, J. S. Vol. CLXXIX, 318 ffLondon Book II
4. Structural analysis of the sermons of Dr. Harry Emerson Fosdick
5. Phillips, A. E. 1908.Effective Speaking195Chicago