Alikaputri, Fiona Rahmi. 2026. “Improving The Quality Of Eye Care Services Using The Servqual Method, Importance–Performance Analysis, And The 5 Whys Analysis (Case Study: Abc Eye Clinic)”. Eduvest - Journal of Universal Studies 6 (6):7232-47. https://doi.org/10.59188/eduvest.v6i6.53235.