Zalukhu, Bazaro, Serniati Zebua, Eliagus Telaumbanua, and Jeliswan Berkat Iman Jaya Gea. “Analisis Pemanfaatan Kode Quick Response Dalam Meningkatkan Operasional Pelayanan Pelanggan Di Restaurant Grand Kartika Kota Gunungsitoli”. Innovative: Journal Of Social Science Research 3, no. 6 (November 26, 2023): 1885–1892. Accessed June 23, 2026. http://j-innovative.org/index.php/Innovative/article/view/6531.