1. Handbook of English Intonation;Armstrong,1931
2. Pitch and Intensity Characteristics of Stage Speech;Cowan;Archives of Speech,1936
3. Voice and Articulation Drillbook;Fairbanks,1960
4. The Effects of Smoking on the Speaking Fundamental Frequency of Adult Women;Gilbert;Journal of Psycholinguistic Research,1974
5. Analog Instrumentation for Acoustic Speech Analysis;Hollien,1981