Fitria M, Yanti W, Hidayat F. Deskripsi Pemahaman Konsep Matematis Mahasiswa Berdasarkan Teori APOS Dalam Perkuliahan Daring Materi Turunan: Description of Understanding Student Mathematical Concepts Based on APOS Theory in Online Lectures Derivative Material. nusant. j. of education and soc. science [Internet]. 29 Januari 2024 [dikutip 2 April 2026];1(1):25-31. Tersedia pada: https://ejurnal.unukase.ac.id/index.php/nujess/article/view/17