Salwa Almaliyah and Ahman 2024. Validasi Instrumen Sikap Optimisme Remaja: Analysis Rasch Model. G-Couns: Jurnal Bimbingan dan Konseling. 9, 1 (Aug. 2024), 701–709. DOI:https://doi.org/10.31316/gcouns.v9i1.6310.