World Health Organization. (2011). Bugs, drugs & smoke: Stories from public health. World Health Organization.
Chicago-referens (17:e uppl.)World Health Organization. Bugs, Drugs & Smoke: Stories from Public Health. Geneva, Switzerland: World Health Organization, 2011.
MLA-referens (8:e uppl.)World Health Organization. Bugs, Drugs & Smoke: Stories from Public Health. World Health Organization, 2011.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.