Desi Lestari, et al. “The Correlation Between Informal Peer Communication in English and Students’ Self-Confidence in Speaking English in Class at MAS Pondok Pesantren Syafa’aturrasul”. Jurnal Pendidikan Dan Sastra Inggris, vol. 5, no. 3, Oct. 2025, pp. 156-62, doi:10.55606/jupensi.v5i3.6069.