Parhusip, Susi, Suprapto Manurung, and Theresia Monika Siahaan. “Pengaruh Model Logan Avenue Problem Solving (LAPS) Heuristic Terhadap Kemampuan Pemecahan Masalah Matematis Siswa Di Kelas VIII”. Jurnal Pendidikan dan Konseling (JPDK) 4, no. 6 (November 3, 2022): 813–823. Accessed June 30, 2024. http://journal.universitaspahlawan.ac.id/index.php/jpdk/article/view/8254.