Sawczuk, Piotr. “Exemption from VAT for Training, Advisory and Related Services Provided by Subcontractors of Beneficiaries Implementing Projects Financed from the European Social Fund”. Regional Barometer. Analyses & Prognoses 14, no. 4 (February 16, 2017): 57–64. Accessed November 8, 2024. https://czaz.akademiazamojska.edu.pl/index.php/br/article/view/464.