Hartmann, W. M. (1997). Signals, sound, and sensation. American Institute of Physics.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHartmann, William M. Signals, Sound, and Sensation. Woodbury, N.Y: American Institute of Physics, 1997.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHartmann, William M. Signals, Sound, and Sensation. American Institute of Physics, 1997.
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