Ward, H., Mercer, C., Wellings, K., Fenton, K., Erens, B., Copas, A., & Johnson, A. (2005). Who pays for sex? An analysis of the increasing prevalence of female commercial sex contacts among men in Britain. BMJ Group.

Ward, H., C. Mercer, K. Wellings, K. Fenton, B. Erens, A. Copas, و A. Johnson. Who Pays for Sex? An Analysis of the Increasing Prevalence of Female Commercial Sex Contacts Among Men in Britain. BMJ Group, 2005.

Ward, H., et al. Who Pays for Sex? An Analysis of the Increasing Prevalence of Female Commercial Sex Contacts Among Men in Britain. BMJ Group, 2005.