Putriningtyas, N.D. and Astuti, A.T. (2019) “Kidney Bean Yoghurt is Effective to Improve Immune System and Sleep Quality Among Elderly in Yogyakarta”, Jurnal Gizi dan Pangan, 14(3), pp. 141–148. doi:10.25182/jgp.2019.14.3.141-148.