Laili, Fitri Nur, and Nety Mawarda Hatmanti. 2018. “AKTIVITAS FISIK DENGAN KUALITAS TIDUR LANSIA DI POSYANDU LANSIA WULAN ERMA MENANGGAL SURABAYA: Physical Activity With Sleep Quality In Elderly Posyandu Wulan Erma Menanggal Surabaya”. Jurnal Ilmiah Keperawatan (Scientific Journal of Nursing) 4 (1):7-14. https://doi.org/10.33023/jikep.v4i1.129.