WONGSRIKAEW, Warissara; KARTIKA DEWI, Lilis; SIMPOL, Wanida. EFFECTS OF ENGLISH INSTRUCTION USING THE FLIPPED CLASSROOM CONCEPT TO DEVELOP SPEAKING SKILL OF GRADES 1 - 3 IN COVID-19 SITUATION. Journal Universitas Muhammadiyah Gresik Engineering, Social Science, and Health International Conference (UMGESHIC), [S. l.], v. 1, n. 2, p. 313–322, 2021. DOI: 10.30587/umgeshic.v1i2.3398. Disponível em: https://journal.umg.ac.id/index.php/umgeshic/article/view/3398. Acesso em: 6 jun. 2025.