Willis, Brian M.; Levy, Barry S. (April 20, 2002). "Child prostitution: global health burden, research needs, and interventions". Lancet. 359 (9315): 1417–22. doi:10.1016/S0140-6736(02)08355-1. PMID11978356.
nih.gov
pubmed.ncbi.nlm.nih.gov
Willis, Brian M.; Levy, Barry S. (April 20, 2002). "Child prostitution: global health burden, research needs, and interventions". Lancet. 359 (9315): 1417–22. doi:10.1016/S0140-6736(02)08355-1. PMID11978356.