Não informado. (1982). International health news. National Council for International Health.
Chicago-Zitierstil (17. Ausg.)Não informado. International Health News. Washington: National Council for International Health, 1982.
MLA-Zitierstil (8. Ausg.)Não informado. International Health News. National Council for International Health, 1982.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.