APA (7th ed.) Citation

Anderson, J. E., & Bernard, H. (1929). Audio power amplifiers. Hennessy radio publications corporation.

Chicago Style (17th ed.) Citation

Anderson, John Elnar, and Herman Bernard. Audio Power Amplifiers. [New York]: Hennessy radio publications corporation, 1929.

MLA (9th ed.) Citation

Anderson, John Elnar, and Herman Bernard. Audio Power Amplifiers. Hennessy radio publications corporation, 1929.