APA (7th ed.) Citation

Liu, B., Ivers, R., Norton, R., Boufous, S., Blows, S., & Lo, S. (2008). Helmets for preventing injury in motorcycle riders.

Chicago Style (17th ed.) Citation

Liu, B., R. Ivers, R. Norton, S. Boufous, S. Blows, and S. Lo. Helmets for Preventing Injury in Motorcycle Riders. 2008.

MLA (9th ed.) Citation

Liu, B., et al. Helmets for Preventing Injury in Motorcycle Riders. 2008.