Apsari, Y., Syathroh, I. L., & Rizqiya, R. S. (2017). PROMOTING ENGLISH TEACHERS’ PROFESSIONAL DEVELOPMENT (TPD) THROUGH THE PRACTICE OF LESSON STUDY. OKARA: Jurnal Bahasa Dan Sastra, 11(2), 303-318. https://doi.org/10.19105/ojbs.v11i2.1496