Ibid.: Province of Expression: Expression Co.

Rush, James: The Philosophy of the Human Voice. Lippincott.

Quintilian, Marcus F.: Institutes of Oratory. Macmillan.

Gesture and Phonetics:

Chamberlain, W.B., and Clark, S.H.: Principles of Vocal
Expression
. Scott.

Jespersen, Otto: Growth and Structure of the English Language.
Stechert.

Jones, Daniel: Pronunciation of English; Phonetics and Phonetic
Transcriptions
. Putnam.

Ibid.: Chart of English Speech Sounds. Oxford.

Rippman, Walter: Elements of Phonetics, English, French, and
German
. Dent.

Ibid.: The Sounds of Spoken English. Dent.