br. Saragih, Renita, et al. “A Descriptive Study on the Role of the Post Office in Mail Services in the Digitalization Era: The Post Office at Jl. Pelita IV, Medan Perjuangan”. Jurnal Bahasa Indonesia Prima (BIP), vol. 7, no. 1, Mar. 2025, pp. 95-98, doi:10.34012/bip.v7i1.6545.