Prilimercy Engelien Kojongian,Soflies Marry Bingku,Metty R. Manila. SPEAKING MATERIALS IN “NETZWERK” BOOK BY USING EXPRESSIONS TO DEVELOP STUDENTS’ SPEAKING ABILITY. PEGEGOG [Internet]. 2025 Apr. 28 [cited 2025 May 21];15(4):142-5. Available from: https://www.pegegog.net/index.php/pegegog/article/view/3957