Van Riper, C., & Emerick, L. L. (1990). Speech correction: An introduction to speech pathology and audiology (8th ed.). Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Van Riper, Charles, agus Lon L. Emerick. Speech Correction: An Introduction to Speech Pathology and Audiology. 8th ed. Englewood Cliffs, N.J: Prentice Hall, 1990.
Lua MLA (9ú heag.)Van Riper, Charles, agus Lon L. Emerick. Speech Correction: An Introduction to Speech Pathology and Audiology. 8th ed. Prentice Hall, 1990.
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