APA (7th ed.) Citation

Active Communications (Firm), Knott, T. J., & Tower, J. (2009). Joan Tower: In memory. Active Communications.

Chicago Style (17th ed.) Citation

Active Communications (Firm), Thomas J. Knott, and Joan Tower. Joan Tower: In Memory. [Stow, Mass.]: Active Communications, 2009.

MLA (9th ed.) Citation

Active Communications (Firm), et al. Joan Tower: In Memory. Active Communications, 2009.