World Health Organization. (2011). Helminth control in school-age children: A guide for managers of control programmes (2nd.). World Health Organization.
Chicago-Zitierstil (17. Ausg.)World Health Organization. Helminth Control in School-age Children: A Guide for Managers of Control Programmes. 2nd. 2011: World Health Organization, 2011.
MLA-Zitierstil (8. Ausg.)World Health Organization. Helminth Control in School-age Children: A Guide for Managers of Control Programmes. 2nd. World Health Organization, 2011.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.