Não informado. Selected references on environmental quality as it relates to health. National Library of Medicine.
Chicago-referens (17:e uppl.)Não informado. Selected References on Environmental Quality as It Relates to Health. Bethesda, Md: National Library of Medicine.
MLA-referens (8:e uppl.)Não informado. Selected References on Environmental Quality as It Relates to Health. National Library of Medicine.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.