“Implementation of the Halal Product Assurance System (SJPH) at the Nutrition Installation of the Aisyiyah Islamic Hospital in Nganjuk: Implementasi Sistem Jaminan Produk Halal (SJPH) Pada Instalasi Gizi Rumah Sakit Islam Aisyiyah Nganjuk”, PELS, vol. 10, no. 1, pp. 643–647, Oct. 2026, doi: 10.21070/pels.v10i1.2965.