APA (7th ed.) Citation

Harrison, J., James, L., & Gavin, M. (2005). The summer he didn't die. Blackstone Audio.

Chicago Style (17th ed.) Citation

Harrison, Jim, Lloyd James, and Marguerite Gavin. The Summer He Didn't Die. [Place of publication not identified]: Blackstone Audio, 2005.

MLA (9th ed.) Citation

Harrison, Jim, et al. The Summer He Didn't Die. Blackstone Audio, 2005.