1. Minister of Transport and Communications and Minister of Education and Science, Ordinance № 31 of 26.07.1999 on the requirements, conditions and procedure for acquiring the right to drive a motor vehicle, Issued by, promulgated, SG, No. 69 of 3 August 1999, in force since 13 July 2007, Sofia, (2007), (In Bulgarian).
2. Ministry of Transport and Communications, Ordinance № 37 of 2 August 2002 on the conditions and procedure for training of candidates for acquiring the right to drive a motor vehicle and the conditions and procedure for issuing a permit for their training Issued by the Minister of Transport and Communications, promulgated, SG, No. 82 of 27.08.2002, in force since 27.08.2002, supplement, no. 55 of 12.07.2019, in force since 12.07.2019, Sofia, (2019), (In Bulgarian).
3. MTC, Ordinance № 38 of 16.04.2004 on the conditions and procedure for conducting the examinations of candidates for acquiring the right to drive a motor vehicle and the procedure for conducting the examination examinations Issued by the Minister of Transport and Communications, promulgated, SG, iss. 42 of 21.05.2004, in force since 21.05.2004, last ed. and add., no. 30 of 13.04.2021, in force since 14.05.2021, Sofia, (2021), (In Bulgarian).
4. Ministry of Transport and Communications, Road traffic act. Promulgated, SG, No. 20 of 5 March 1999, no. 84 of 8.10.2021, Sofia, (2021), (In Bulgarian).
5. P. Atanasova and D. Lyubenov, A Study of the Candidates Drivers Mistakes in Practical Training, Proceedings of University of Ruse, Volume 59, Book 4.2, (2020), pp. 143–152, ISBN:1311-3321