Mbaloto, Freny, 		Mua, Estelle, 		Sekeon, Robi, 		Susanto, Denny, 		Yanriatuti, Ida, 		Tarigan, Sabarulin, 		Sarman, Juliana, AND 		Beba, Nova.
" The Effectiveness of Puzzle Therapy in Improving the Cognitive Function of the Elderly" <em>Adi Husada Nursing Journal</em> [Online], Volume 9 Number 2 (17 October 2023)