APA (7th ed.) Citation

Heneghan, C., Langton, D., & Thompson, M. (2012). Ongoing problems with metal-on-metal hip implants.

Chicago Style (17th ed.) Citation

Heneghan, C., D. Langton, and M. Thompson. Ongoing Problems with Metal-on-metal Hip Implants. 2012.

MLA (9th ed.) Citation

Heneghan, C., et al. Ongoing Problems with Metal-on-metal Hip Implants. 2012.