“Students’ Negotiation Text Writing Skills in Phase E at SMK Negeri 6 Padang through the Problem-Based Learning Model: KEMAMPUAN MENULIS TEKS NEGOSIASI SISWA FASE E SMK NEGERI 6 PADANG MELALUI MODEL PROBLEM BASED LEARNING”, TOFEDU, vol. 5, no. 3, pp. 5734–5740, Oct. 2026, doi: 10.61445/9enr3q87.