APA
Perkins W. H., . (1969). Stuttering and Discriminative Awareness. : U.S. Department of Health Education and Welfare.
Chicago
Perkins William H, . 1969. Stuttering and Discriminative Awareness. : U.S. Department of Health Education and Welfare.
Harvard
Perkins W. H., . (1969). Stuttering and Discriminative Awareness. : U.S. Department of Health Education and Welfare.
MLA
Perkins William H, . Stuttering and Discriminative Awareness. : U.S. Department of Health Education and Welfare. 1969.
