Z. Co, M. A. N. . Polinar, and R. B. . Payao, “Multi-level Car Parking as a Viable Solution to Traffic Issues in Davao City”, Int. J. Multidiscip. Appl. Bus. Edu. Res., vol. 3, no. 11, pp. 2191–2197, Nov. 2022, doi: 10.11594/ijmaber.03.11.05.