Johnson, W., Darley, F. L., & Spriestersbach, D. C. (1952). Diagnostic manual in speech correction: A professional training workbook. Harper & Brothers Pub.
Chicago-viite (17. p.)Johnson, Wendell, Frederic L. Darley, ja D. C. Spriestersbach. Diagnostic Manual in Speech Correction: A Professional Training Workbook. New York: Harper & Brothers Pub, 1952.
MLA-viite (9. p.)Johnson, Wendell, et al. Diagnostic Manual in Speech Correction: A Professional Training Workbook. Harper & Brothers Pub, 1952.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.