[1]
P. Puspitasari, N. N. Zafira, F. F. Alsha, N. N. Utami, and D. Nurmala, Trans., “The Use of Formal and Informal Language Varieties in Internal Communication of the Deli Serdang Regency DPRD”, WSSHS, vol. 4, no. 05, pp. 576–583, May 2026, doi: 10.58812/wsshs.v4i05.2843.