Walker, J. (1822). A rhetorical grammar: In which improprieties in reading and speaking are detected, and the true sources of elegant pronunciation are pointed out : with a complete analysis of the voice, showing its specific modifications, and how they may be applied to different species of sentences and the several figures of rhetoric : to which are added outlines of composition, or plain rules for writing orations and speaking them in public (2nd American ed.). Boston: Published by Cummings and Hilliard ..

Walker, John. A Rhetorical Grammar: In Which Improprieties in Reading and Speaking Are Detected, and the True Sources of Elegant Pronunciation Are Pointed Out : With a Complete Analysis of the Voice, Showing Its Specific Modifications, and How They May Be Applied to Different Species of Sentences and the Several Figures of Rhetoric : To Which Are Added Outlines of Composition, or Plain Rules for Writing Orations and Speaking Them in Public. 2nd American ed. Boston: Published by Cummings and Hilliard ., 1822.

Walker, John. A Rhetorical Grammar: In Which Improprieties in Reading and Speaking Are Detected, and the True Sources of Elegant Pronunciation Are Pointed Out : With a Complete Analysis of the Voice, Showing Its Specific Modifications, and How They May Be Applied to Different Species of Sentences and the Several Figures of Rhetoric : To Which Are Added Outlines of Composition, or Plain Rules for Writing Orations and Speaking Them in Public. 2nd American ed. Boston: Published by Cummings and Hilliard ., 1822.