Statistics, I. L. O. D. o. (2021). Volunteer work measurement guide: Guidance on implementing the ILO-recommended add-on module on volunteer work in national labour force surveys. International Labour Organization.
Chicago-Zitierstil (17. Ausg.)Statistics, International Labour Organization. Department of. Volunteer Work Measurement Guide: Guidance on Implementing the ILO-recommended Add-on Module on Volunteer Work in National Labour Force Surveys. International Labour Organization, 2021.
MLA-Zitierstil (9. Ausg.)Statistics, International Labour Organization. Department of. Volunteer Work Measurement Guide: Guidance on Implementing the ILO-recommended Add-on Module on Volunteer Work in National Labour Force Surveys. International Labour Organization, 2021.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.