Humairah, Siti, et al. “The Influence of Self-Confidence, Readiness to Learn, Peers and Family Environment on the Learning Achievement of Class X Students in Subjects Economics Through Learning Disciplines Variable Intervention As ”. Journal of Practice Learning and Educational Development , vol. 6, no. 2, July 2026, pp. 1895-04, doi:10.58737/jpled.v6i2.1013.