APA (7th ed.) Citation

Smith, J. O. I. (2011). Spectral audio signal processing. W3K.

Chicago Style (17th ed.) Citation

Smith, Julius O. III. Spectral Audio Signal Processing. [Stanford, Calif.?]: W3K, 2011.

MLA (9th ed.) Citation

Smith, Julius O. III. Spectral Audio Signal Processing. W3K, 2011.