Johnson, W. 1. (1967). Speech handicapped school children. Harper.
Cita Chicago (17th ed.)Johnson, Wendell 1906. Speech Handicapped School Children. New York: Harper, 1967.
Cita MLA (9th ed.)Johnson, Wendell 1906. Speech Handicapped School Children. Harper, 1967.
Atenció: Aquestes cites poden no estar 100% correctes.