Diaz, Jayson, Ray Lorenzo, Corine Mag-aso, and Bai Sarah Akilan. 2023. “Factors Influencing Customer Loyalty Among Optical Clinics in The City of Koronadal, South Cotabato, Philippines”. Journal of Applied Management and Business 4 (2):80-92. https://doi.org/10.37802/jamb.v4i2.434.