World Health Organization. (2002). Guidelines for the management of sexually transmitted infections in female sex workers. World Health Organization.
Chicago-viite (17. p.)World Health Organization. Guidelines for the Management of Sexually Transmitted Infections in Female Sex Workers. Geneva, Switzerland: World Health Organization, 2002.
MLA-viite (8. p.)World Health Organization. Guidelines for the Management of Sexually Transmitted Infections in Female Sex Workers. World Health Organization, 2002.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.