“Rural and Urban Language Variation in Balikpapan City: A Sociolinguistic Review: Variasi Bahasa Rural dan Urban di Kota Balikpapan: Tinjauan Sosiolinguistik”, Pesastra, vol. 3, no. 3, pp. 120–129, Aug. 2026, doi: 10.36709/pesastra.v3i3.138.