Simbolon, D. H. ., M. . Marbun, H. br . Sihite, and S. B. . Purba. “PENGARUH MODEL PEMBELAJARAN PROJECT BASED LEARNING TERHADAP AKTIVITAS DAN HASIL BELAJAR IPA SD”. Jurnal Ilmiah Aquinas, vol. 9, no. 1, Feb. 2026, pp. 113-22, https://ejournal.ust.ac.id/index.php/Aquinas/article/view/5727.