Mbaloto, F., 		Mua, E., 		Sekeon, R., 		Susanto, D., 		Yanriatuti, I., 		Tarigan, S., 		Sarman, J., & 		Beba, N.
2023 Oct 17.  The Effectiveness of Puzzle Therapy in Improving the Cognitive Function of the Elderly. Adi Husada Nursing Journal. [Online] 9:2