World Health Organization. (2003). Surgical care at the district hospital. World Health Organization.
Chicago-viite (17. p.)World Health Organization. Surgical Care at the District Hospital. Geneva: World Health Organization, 2003.
MLA-viite (8. p.)World Health Organization. Surgical Care at the District Hospital. World Health Organization, 2003.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.