Tuanany, Sarbanun, et al. “The Effectiveness of Gamification Strategy on English Vocabulary Enhancing at SDN Ngronggo 8 Kediri”. Jurnal Onoma: Pendidikan, Bahasa, Dan Sastra, vol. 11, no. 1, Jan. 2025, pp. 601-9, doi:10.30605/onoma.v11i1.4812.