“ENGLISH 1 EFFECT OF HEAD TEACHER’S PROFESSIONAL SKILLS ON THE PERFORMANCE OF SECONDARY SCHOOL TEACHERS AND STUDENTS”. The International Research Journal of Usooluddin 4, no. 2 (September 1, 2020): 1–14. Accessed August 30, 2026. https://journalusooluddin.com/index.php/irjdu/article/view/103.