Musyafira ID, Wrastari AT. Development of Instrument to Assess Mathematics Learning Result in 2nd Grade Elementary School. PSP [Internet]. 10 Desember 2024 [dikutip 3 November 2025];2(1):272-6. Tersedia pada: https://psikologi.unair.ac.id/proceeding-series-of-psychology/index.php/psp/article/view/110