World Health Organization. (2011). Bugs, drugs & smoke: Stories from public health. World Health Organization.
Chicago-viite (17. p.)World Health Organization. Bugs, Drugs & Smoke: Stories from Public Health. Geneva, Switzerland: World Health Organization, 2011.
MLA-viite (8. p.)World Health Organization. Bugs, Drugs & Smoke: Stories from Public Health. World Health Organization, 2011.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.