Farid, D.A.M. et al. 2024. The Effectiveness of Flash Cards in Enhancing Students’ Self-Concept. Nusantara of Research : Jurnal Hasil-hasil Penelitian Universitas Nusantara PGRI Kediri. 11, 1 (Mar. 2024), 37–45. DOI:https://doi.org/10.29407/nor.v11i1.21889.