Syaifullah S. IMPROVING STUDENTS ACHIEVEMENT IN SPEAKING BY USING STUDENTS TEAMS ACHIEVEMENT DIVISIONS (STAD) AT GRADE VII 2 STUDENTS OF JUNIOR HIGH SCHOOL 3 PEKANBARU. lectura [Internet]. 2015Aug.20 [cited 2024Apr.19];6(2). Available from: https://journal.unilak.ac.id/index.php/lectura/article/view/194