Changes made by Sixth Council Directive of 17 May 1977 on the harmonization of the laws of the Member States relating to turnover taxes — Common system of value added tax: uniform basis of assessment (77/388/EEC)
EU Directive 1977/388
The legislation Sixth Council Directive of 17 May 1977 on the harmonization of the laws of the Member States relating to turnover taxes — Common system of value added tax: uniform basis of assessment (77/388/EEC) changes, newest first. Choose one to see each change.
From legislation.gov.uk's record of changes, the official one: see it there.