APA (7th ed.) Citation

Gregory, H. H. (1986). Stuttering: Differential evaluation and therapy. Pro-Ed, Inc..

Chicago Style (17th ed.) Citation

Gregory, Hugo H. Stuttering: Differential Evaluation and Therapy. Austin, Tex.: Pro-Ed, Inc., 1986.

MLA (9th ed.) Citation

Gregory, Hugo H. Stuttering: Differential Evaluation and Therapy. Pro-Ed, Inc., 1986.