Cristina Sá and Carlos Gomes and António Martins, Tax Morale Dimensions Analysis in Portugal and Spain. journal = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology. January 2016, vol. 120(12). 3969 - 3975 [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/10006232.