APA
Levitt H. . N. P. W., . (1971). Sensory Training Aids for the Hearing Impaired. : National Academy of Engineering.
Chicago
Levitt Harry Nye Patrick W, . 1971. Sensory Training Aids for the Hearing Impaired. : National Academy of Engineering.
Harvard
Levitt H. . N. P. W., . (1971). Sensory Training Aids for the Hearing Impaired. : National Academy of Engineering.
MLA
Levitt Harry Nye Patrick W, . Sensory Training Aids for the Hearing Impaired. : National Academy of Engineering. 1971.
