VAN ZYL, S. The VAT Treatment of Vouchers: a Comparative Study between South Africa and the European Union. Comparative and International Law Journal of Southern Africa, [S. l.], v. 46, n. 2, p. 234–257, 2013. Disponível em: https://unisapressjournals.co.za/index.php/CILSA/article/view/11204. Acesso em: 25 aug. 2024.