R. Sahib, E. Wijayanti, A. Prasetio Nugroho, S. bin Ukka, and A. Miftahul Maulidil Mursyid, “Exploring the Impact of Using Google Classroom on Speaking Virtual Class by Papuan EFL Students”, ELT-Lectura, vol. 9, no. 2, pp. 163-175, Aug. 2022.