APA (7th ed.) Citation

Butler, T., Richmond, R., Belcher, J., Wilhelm, K., & Wodak, A. (2007). Should smoking be banned in prisons? BMJ Publishing Group.

Chicago Style (17th ed.) Citation

Butler, Tony, R. Richmond, J. Belcher, K. Wilhelm, and A. Wodak. Should Smoking Be Banned in Prisons? BMJ Publishing Group, 2007.

MLA (9th ed.) Citation

Butler, Tony, et al. Should Smoking Be Banned in Prisons? BMJ Publishing Group, 2007.