Nadtayay, Nawaporn, 		Najah, Shofiyatul, AND 		Simpol, Wanida.
" The Development Of Learning Achievement In English Languages Of Grade6 Students In Covid-19 Situation By Applying The Flipped Classroom Concept Inverted" <em>Journal Universitas Muhammadiyah Gresik Engineering, Social Science, and Health International Conference (UMGESHIC)</em> [Online], Volume 1 Number 2 (21 December 2021)