APA (7th ed.) Citation

Bieber, J., & Usher. (2009). My world. Island Records.

Chicago Style (17th ed.) Citation

Bieber, Justin, and Usher. My World. New York, N.Y.: Island Records, 2009.

MLA (9th ed.) Citation

Bieber, Justin, and Usher. My World. Island Records, 2009.