Lutfiansah, K., M. Jannah, M. Murtaqi, and S. A. Salsabila. “Attracting Students’ Interest in Learning English Through Quipper School Premium in 12th Grade of SMAN 1 Karangkobar”. Conference on English Language Teaching, June 2021, pp. 65-75, doi:10.24090/celti.2021.267.