APA (7th ed.) Citation

Irwin, R. B. (1973). The Ohio tests of articulation and perception of sounds: Background of research, description of tests, standardization, and manual of procedures. Stanwix House.

Chicago Style (17th ed.) Citation

Irwin, Ruth Beckey. The Ohio Tests of Articulation and Perception of Sounds: Background of Research, Description of Tests, Standardization, and Manual of Procedures. Pittsburgh: Stanwix House, 1973.

MLA (9th ed.) Citation

Irwin, Ruth Beckey. The Ohio Tests of Articulation and Perception of Sounds: Background of Research, Description of Tests, Standardization, and Manual of Procedures. Stanwix House, 1973.