Council Directive 77/388/EEC of 17 May 1977 on the harmonisation of the laws of the Member States relating to turnover taxes - Common system of value added tax: uniform basis of assessment (1) has been significantly amended on several occasions.
Директива Ради 2006/112/ЄС від 28 листопада 2006 року про спільну систему податку на додану вартість : Directive; 720 on November 28, 2006 № 2006/112/ЄС // Database «Legislation of Ukraine» / Verkhovna Rada of Ukraine.