APA (7th ed.) Citation

Butler, T., Richters, J., Yap, L., & Donovan, B. (2013). Condoms for prisoners: No evidence that they increase sex in prison, but they increase safe sex.

Chicago Style (17th ed.) Citation

Butler, Tony, J. Richters, L. Yap, and B. Donovan. Condoms for Prisoners: No Evidence That They Increase Sex in Prison, but They Increase Safe Sex. 2013.

MLA (9th ed.) Citation

Butler, Tony, et al. Condoms for Prisoners: No Evidence That They Increase Sex in Prison, but They Increase Safe Sex. 2013.