Musyafira, Ilena Dwika, and Aryani Tri Wrastari. “Development of Instrument to Assess Mathematics Learning Result in 2nd Grade Elementary School”. PROCEEDING SERIES OF PSYCHOLOGY, vol. 2, no. 1, Dec. 2024, pp. 272-6, https://psikologi.unair.ac.id/proceeding-series-of-psychology/index.php/psp/article/view/110.