Aris Handiyoko Sibuea, Endang Sulistya Rini and Linda Trimurni Maas (2023) “IMPLEMENTATION OF QUALITY FUNCTION DEPLOYMENT ANALYSIS BY ADOPTING IN SERVICE QUALITY METHODS EFFORTS TO IMPROVE SERVICE QUALITY AT UPT. RUMAH SAKIT KHUSUS MATA IN NORTH SUMATRA PROVINCE”, International Journal of Social Science, Educational, Economics, Agriculture Research and Technology (IJSET), 2(8), pp. 368–377. doi: 10.54443/ijset.v2i8.192.