Tani, Sirpa (June 2002). "Whose Place is This Space? Life in the Street Prostitution Area of Helsinki, Finland". International Journal of Urban and Regional Research. 26 (2): 343–359. doi:10.1111/1468-2427.00383. ISSN0309-1317.
Charlotta Holmstrom and May-Len Skilbrei "Prostitution in the Nordic Countries" (Nordic Gender Institute, Conference report, Stockholm, 16–17 October 2008).
Jaana Kauppinen and Essi Thesslund Trafficking and Exploitation of Prostitution (Pro-tukipiste, Submission to the Committee on the Elimination of All Forms of Discrimination against Women, 31 January 2014).
Tani, Sirpa (June 2002). "Whose Place is This Space? Life in the Street Prostitution Area of Helsinki, Finland". International Journal of Urban and Regional Research. 26 (2): 343–359. doi:10.1111/1468-2427.00383. ISSN0309-1317.
Gregor., Gall (2006). Sex worker union organising : an international study. Palgrave Connect (Online service). Basingstoke [England]: Palgrave Macmillan. ISBN9780230502482. OCLC314828868.
Gregor, Gall (29 February 2016). Sex worker unionization : global developments, challenges and possibilities. New York. ISBN9781137320131. OCLC936429868.{{cite book}}: CS1 maint: location missing publisher (link)