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Mahyudin, Ritonga and Ahmad, Lahmi and Riki, Saputra and Mursal, Mursal and Nofrizaldi, Nofrizaldi (2022) Online Learning During the Covid-19 Pandemic Period: Studies on the Social Presence and Affective and Cognitive Engagement of Students. Pegem Journal of Education and Instruction, 12 (1). pp. 207-212.
Mahyudin, Ritonga and Ahmad, Lahmi and Riki, Saputra and Mursal, Mursal and Nofrizaldi, Nofrizaldi (2023) Online Learning During the Covid-19 Pandemic Period: Studies on the Social Presence and Affective and Cognitive Engagement of Students (Cek Similarity). pegem journal of education and instruction, Indonesia.
Mahyudin, Ritonga and Ahmad, Lahmi and Riki, Saputra and Mursal, Mursal and Nofrizaldi, Nofrizaldi (2022) Online Learning During the Covid-19 Pandemic Period: Studies on the Social Presence and Affective and Cognitive Engagement of Students (Peer Review). Universitas Muhammadiyah Sumatera Barat, Padang.
Mahyudin, Ritonga and Ahmad, Lahmi and Riki, Saputra and Mursal, Mursal and Nofrizaldi, Nofrizaldi (2022) Online Learning During the Covid-19 Pandemic Period: Studies on the Social Presence and Affective and Cognitive Engagement of Students. Pegem Journal of Education and Instruction, Pegegog.
Mahyudin, Ritonga and Ahmad, Lahmi and Riki, Saputra and Mursal, Mursal and Nofrizaldi, Nofrizaldi (2021) Online Learning During the Covid-19 Pandemic Period: Studies on the Social Presence and Affective and Cognitive Engagement of Students (Cek Similarity). Universitas Muhammadiyah Sumatera Barat, Padang.