World Health Organization. (2002). Helminth control in school-age children: A guide for managers of control programmes (Segunda edición.). Word Health Organization.
Citazione stile Chigago Style (17a edizione)World Health Organization. Helminth Control in School-age Children: A Guide for Managers of Control Programmes. Segunda edición. Geneva: Word Health Organization, 2002.
Citatione MLA (8a ed.)World Health Organization. Helminth Control in School-age Children: A Guide for Managers of Control Programmes. Segunda edición. Word Health Organization, 2002.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.