The World Bank, & The International Bank for Reconstruction and Development. The handwashing handbook: A guide for developing a hygiene promotion program to increase handwashing with soap. Washington, DC 20433: The World Bank.
Chicago ZitierstilThe World Bank, und The International Bank for Reconstruction and Development. The Handwashing Handbook: A Guide for Developing a Hygiene Promotion Program to Increase Handwashing With Soap. Washington, DC 20433: The World Bank.
MLA ZitierstilThe World Bank, und The International Bank for Reconstruction and Development. The Handwashing Handbook: A Guide for Developing a Hygiene Promotion Program to Increase Handwashing With Soap. Washington, DC 20433: The World Bank.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.