Ulfa, Ulfa, Fanny Kartika Oktavianti, Tiur Roida Simbolon, and Muhammad Farras Nasrida. 2026. “Analisis Sistem Pengelolaan Administrasi Persuratan Di Biro Perekonomian Sekretariat Daerah Kalimantan Tengah”. RIGGS: Journal of Artificial Intelligence and Digital Business 5 (2):2682-89. https://doi.org/10.31004/riggs.v5i2.8810.