Anggraini, Mona, and Syahrul Syahrul. “The Use of Google Classroom in Learning English at the Eleventh Grade at SMKN 1 AMPEK ANGKEK”. FOSTER: Journal of English Language Teaching, vol. 2, no. 4, Sept. 2021, pp. 473-84, doi:10.24256/foster-jelt.v2i4.43.