APA (7th ed.) Citation

Hornby, N., Weitz, P., Weitz, C., Hedges, P., Rosenthal, J., Grant, H., & Hoult, N. (2011). About a boy. Universal Studios.

Chicago Style (17th ed.) Citation

Hornby, Nick, Paul Weitz, Chris Weitz, Peter Hedges, Jane Rosenthal, Hugh Grant, and Nicholas Hoult. About a Boy. Universal City: Universal Studios, 2011.

MLA (9th ed.) Citation

Hornby, Nick, et al. About a Boy. Universal Studios, 2011.