Ramdani, M. A., and N. Susanti. “Influence of Product Quality and Price on the Decision to Purchase Eyesglass at Optic Naufal Serpong”. Digital Business: Tren Bisnis Masa Depan, vol. 14, no. 2, Sept. 2023, pp. 75-81, doi:10.59651/digital.v14i2.108.