purwanto, hendra, and Handaru Indrian Sasmito Adi. “PENGARUH KUALITAS PELAYANAN DAN KUALITAS PRODUK TERHADAP KEPUASAN PELANGGAN PADA UD. LANCAR (Agen Gas LPG Dan Air Minum Club) Semanding - Tuban Jawa Timur”. Prosiding SNasPPM 7, no. 1 (October 31, 2022): 483–490. Accessed July 3, 2024. http://prosiding.unirow.ac.id/index.php/SNasPPM/article/view/1418.