*Muhammad Mushtaq **Ahmed Rizwan Freed ***Dr. Muhammad Akram ****Shabbir Ahmad 2017. INFLUENCE OF TEACHER’S USE OF SECOND LANGUAGE ON STUDENT’S LANGUAGE PROFICIENCY: A STUDY OF THE EFFECTS OF TEACHER’S USE OF URDU AS CLASSROOM LANGUAGE ON PUNJABI SPEAKING CHILDREN. Al Qalam. 22, 2 (Jun. 2017), 138-146.