1. American National Standard Specification for Audiometers, ANSI S3.6-1969,1969
2. American National Standard Specification for Audiometers, ANSI S3.6-1989,1989
3. Artificial Headbone for the Calibration of Audiometer Bone Vibrators, ANSI S3.13-1972,1972
4. American National Standard Criteria for permissible Ambient Noise During Audiometric Testing, ANSI S3.1-1986,1986
5. Guidelines for audiometric symbols;ASHA,1974