Phumphanit, Y., 		Rohmawati, A., & 		Simpol, W.
2021 Dec 20.  EFFECT OF APPLING FLIPPED CLASSROOM ON ENGLISH ACHIEVEMENT OF PRIMARY 5 STUDENTS IN COVID-19 SITUATION. Journal Universitas Muhammadiyah Gresik Engineering, Social Science, and Health International Conference (UMGESHIC). [Online] 1:2