World Health Organization. Office of Library and Health Literature Services. Current bibliography of WHO documentation.
Chicago-Zitierstil (17. Ausg.)World Health Organization. Office of Library and Health Literature Services. Current Bibliography of WHO Documentation.
MLA-Zitierstil (9. Ausg.)World Health Organization. Office of Library and Health Literature Services. Current Bibliography of WHO Documentation.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.