[1]
Situmorang, J. and Hasairin, A. 2025. Analisis Kesulitan Belajar Siswa: Pendekatan Tes Diagnostik Berganda Dua Tingkat dan Kuesioner: (Analysis of Student Learning Difficulties: Two-Tier Multiple-Choice Diagnostic Test and A Questionnaire Approach). BIODIK. 11, 02 (Jun. 2025), 475–484. DOI:https://doi.org/10.22437/biodik.v11i02.43722.