1. Loudness, Pitch and the Timbre of Musical Tones;Harvey;Journal Acoustical Soc. Amer.,1934
2. Twitmyer, Edwin B., and Nathanson, Yale S.: Correction of Defective Speech, Philadelphia, P. Blakiston's Son and Co., Inc.
3. Speech Reconstruction After Prosthesis: Report of a Case;Kimball;J. A. D. A. and Dental Cosmos,1937
4. Effective Speech;Rousseau,1936
5. Voice and Speech Problems;Letitia,1935