Widyarto, Wahyu Oktri, Nugraheni Djamal, and Fauzul Adhim. “Analisis Kualitas Pelayanan Publik Dengan Metode Fuzzy-Service Quality (F-Servqual) Dan Index Potential Gain Customer Value (IPGCV)”. Jurnal Sistem dan Manajemen Industri 2, no. 2 (December 28, 2018): 101-110. Accessed August 12, 2020. https://e-jurnal.lppmunsera.org/index.php/JSMI/article/view/769.