Prasaja, Prasaja, and Maharso Nugroho. “Pengaruh Training Kognitif Terhadap Kemampuan Kognitif Pada Lansia Di Desa Sobokerto Kecamatan Ngemplak Boyolali”. Interest : Jurnal Ilmu Kesehatan 7, no. 2 (November 1, 2018): 206-210. Accessed October 7, 2022. https://jurnalinterest.com/index.php/int/article/view/43.