Klain, Prostitution of Children and Child-Sex Tourism: An Analysis of Domestic and International Responses 1999, ABA Center on Children and the Law, page 33 cited in Susan Song.
Ngày 29 tháng 2 năm 2008.  ^ Klain, Prostitution of Children and Child-Sex Tourism: An Analysis of Domestic and International Responses 1999, ABA Center on Children and the Law, page 33 cited in Susan Song.