2022UNE-EN ISO 14021:2017/A1:2022 Environmental labels and declarations - Self-declared environmental claims (Type II environmental labelling) - Amendment 1: Carbon footprint, carbon neutral (ISO 14021:2016/Amd 1:2021)
2017UNE-EN ISO 14021:2017 Environmental labels and declarations - Self-declared environmental claims (Type II environmental labelling) (ISO 14021:2016)