APA (7th ed.) Citation

Butler, S. C., Butler, J. L., & Butler, A. L. (1997). A low-frequency directional flextensional transducer and line array. Journal of the Acoustical Society of America, 102, 308. https://doi.org/10.1121/1.419609

Chicago Style (17th ed.) Citation

Butler, Stephen C., John L. Butler, and Alexander L. Butler. "A Low-frequency Directional Flextensional Transducer and Line Array." Journal of the Acoustical Society of America 102 (1997): 308. https://doi.org/10.1121/1.419609.

MLA (9th ed.) Citation

Butler, Stephen C., et al. "A Low-frequency Directional Flextensional Transducer and Line Array." Journal of the Acoustical Society of America, vol. 102, 1997, p. 308, https://doi.org/10.1121/1.419609.