Azeez, S. M., B. K. Amin, N. K. Hamid, and A. A. Saber. “Knowledge Protocol of Direct and Indirect Veneers Among Dental Practitioners - A Case Study ”. Polytechnic Journal, vol. 12, no. 2, Apr. 2023, pp. 121-8, doi:10.25156/ptj.v12n2y2022.pp121-128.