APA (7th ed.) Citation

Topp, L., Islam, M., & Day, C. A. (2013). Relative efficacy of cash versus vouchers in engaging opioid substitution treatment clients in survey-based research. Journal of medical ethics, 39(4), 253-256. doi:10.1136/medethics-2012-100884

Chicago Style (17th ed.) Citation

Topp, Libby, M. Islam, and Carolyn Ann Day. "Relative Efficacy of Cash Versus Vouchers in Engaging Opioid Substitution Treatment Clients in Survey-based Research." Journal of Medical Ethics 39, no. 4 (2013): 253-256, https://doi.org/10.1136/medethics-2012-100884.

MLA (9th ed.) Citation

Topp, Libby, et al. "Relative Efficacy of Cash Versus Vouchers in Engaging Opioid Substitution Treatment Clients in Survey-based Research." Journal of Medical Ethics, vol. 39, no. 4, 2013, pp. 253-256, https://doi.org/10.1136/medethics-2012-100884.

Warning: These citations may not always be 100% accurate.