Planas González, M.F. and Gutiérrez Velasco, A. 2018. Sex work and prepaid sex services: a documentary review with a gender perspective. Latinoamericana de Estudios de Familia. 10, 2 (Jul. 2018), 125–147. DOI:https://doi.org/10.17151/rlef.2018.10.2.8.