Sijabat F, Rinco Siregar, Sri Dearmaita Purba. Bermain Puzzle Dalam Meningkatkan Fungsi Kognitif Lansia. JAM [Internet]. 2023 Aug. 7 [cited 2026 Feb. 13];4(2):56-9. Available from: https://e-journal.sari-mutiara.ac.id/index.php/JAM/article/view/4273